gnucash-docs maint: Drop redundant attribute format="PNG"

Frank H.Ellenberger fell at code.gnucash.org
Sat Jun 25 04:24:52 EDT 2022


Updated	 via  https://github.com/Gnucash/gnucash-docs/commit/a2e28367 (commit)
	from  https://github.com/Gnucash/gnucash-docs/commit/fbe2abe3 (commit)



commit a2e28367add16437ca375cb760c0ff1e3634f420
Author: Frank H. Ellenberger <frank.h.ellenberger at gmail.com>
Date:   Sat Jun 25 10:10:42 2022 +0200

    Drop redundant attribute format="PNG"

diff --git a/guide/C/ch_accts.xml b/guide/C/ch_accts.xml
index 76dc25ae..242f1aa2 100644
--- a/guide/C/ch_accts.xml
+++ b/guide/C/ch_accts.xml
@@ -47,7 +47,7 @@ Translators:
       <mediaobject>
         <imageobject role="html">
           <imagedata fileref="figures/basics_AccountRelationships.png"
-                     format="PNG" srccredit="Geert Janssens"></imagedata>
+                     srccredit="Geert Janssens"></imagedata>
         </imageobject>
 
         <imageobject role="fo">
@@ -381,7 +381,7 @@ Translators:
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/accts_DefaultIncomeAccounts.png"
-                         format="PNG" srccredit="Cristian Marchi"></imagedata>
+                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
           <textobject>
@@ -399,7 +399,7 @@ Translators:
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/accts_DefaultExpenseAccounts.png"
-                         format="PNG" srccredit="Cristian Marchi"></imagedata>
+                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
           <textobject>
@@ -497,7 +497,7 @@ Translators:
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/accts_CreateAssetsAccount.png"
-                             format="PNG" srccredit="Cristian Marchi"></imagedata>
+                             srccredit="Cristian Marchi"></imagedata>
               </imageobject>
 
               <textobject>
@@ -543,7 +543,7 @@ Translators:
       <screenshot id="accts-toplevel">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/accts_toplevel.png" format="PNG"
+            <imagedata fileref="figures/accts_toplevel.png"
                        srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -671,7 +671,7 @@ Translators:
       <screenshot id="accts-tree">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/accts_tree.png" format="PNG"
+            <imagedata fileref="figures/accts_tree.png"
                        srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
diff --git a/guide/C/ch_basics.xml b/guide/C/ch_basics.xml
index 1cc201f1..aded1c23 100644
--- a/guide/C/ch_basics.xml
+++ b/guide/C/ch_basics.xml
@@ -133,7 +133,7 @@ Translators:
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/basics_AccountRelationships.png"
-                         format="PNG" srccredit="Geert Janssens"></imagedata>
+                         srccredit="Geert Janssens"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
@@ -625,7 +625,7 @@ Translators:
       <screenshot id="basics-TipOfDay">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/basics_TipOfDay.png" format="PNG"
+            <imagedata fileref="figures/basics_TipOfDay.png"
                        srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -660,7 +660,7 @@ Translators:
       <screenshot id="basics-Accounts">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/basics_Accounts.png" format="PNG"
+            <imagedata fileref="figures/basics_Accounts.png"
                        srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -722,12 +722,12 @@ Translators:
       <screenshot id="basics-CheckAccount">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/basics_CheckAccount.png" format="PNG"
+            <imagedata fileref="figures/basics_CheckAccount.png"
                        srccredit="Bengt Thuree" width="510"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/basics_CheckAccount.png" format="PNG"
+            <imagedata fileref="figures/basics_CheckAccount.png"
                        srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -1175,12 +1175,12 @@ Translators:
                 <screenshot id="basics-SaveXML">
                   <mediaobject>
                     <imageobject role="html">
-                      <imagedata fileref="figures/basics_SaveXML.png" format="PNG"
+                      <imagedata fileref="figures/basics_SaveXML.png"
                          srccredit="Cristian Marchi" width="510px"></imagedata>
                     </imageobject>
 
                     <imageobject role="fo">
-                      <imagedata fileref="figures/basics_SaveXML.png" format="PNG"
+                      <imagedata fileref="figures/basics_SaveXML.png"
                          srccredit="Cristian Marchi"></imagedata>
                     </imageobject>
 
@@ -1232,12 +1232,12 @@ Translators:
                 <screenshot id="basics-SaveSQL">
                   <mediaobject>
                     <imageobject role="html">
-                      <imagedata fileref="figures/basics_SaveSQL.png" format="PNG"
+                      <imagedata fileref="figures/basics_SaveSQL.png"
                              srccredit="Marchi Cristian" width="510px"></imagedata>
                     </imageobject>
 
                     <imageobject role="fo">
-                      <imagedata fileref="figures/basics_SaveSQL.png" format="PNG"
+                      <imagedata fileref="figures/basics_SaveSQL.png"
                              srccredit="Cristian Marchi"></imagedata>
                     </imageobject>
 
@@ -1738,12 +1738,12 @@ Translators:
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup.png"
-                         format="PNG" srccredit="John Ralls" width="510"></imagedata>
+                         srccredit="John Ralls" width="510"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup.png"
-                         format="PNG" srccredit="John Ralls"></imagedata>
+                         srccredit="John Ralls"></imagedata>
               </imageobject>
 
               <caption>
@@ -1773,12 +1773,12 @@ Translators:
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/basics_NewBookOpts.png"
-                         format="PNG" srccredit="Frank H. Ellenberger" width="510"></imagedata>
+                         srccredit="Frank H. Ellenberger" width="510"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/basics_NewBookOpts.png"
-                         format="PNG" srccredit="Frank H. Ellenberger"></imagedata>
+                         srccredit="Frank H. Ellenberger"></imagedata>
               </imageobject>
 
               <caption>
@@ -1807,12 +1807,12 @@ Translators:
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup_currency.png"
-                         format="PNG" srccredit="John Ralls" width="510"></imagedata>
+                         srccredit="John Ralls" width="510"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup_currency.png"
-                         format="PNG" srccredit="John Ralls"></imagedata>
+                         srccredit="John Ralls"></imagedata>
               </imageobject>
 
               <caption>
@@ -1842,12 +1842,12 @@ Translators:
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup_Accounts.png"
-                         format="PNG" srccredit="John Ralls" width="510"></imagedata>
+                         srccredit="John Ralls" width="510"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup_Accounts.png"
-                         format="PNG" srccredit="John Ralls"></imagedata>
+                         srccredit="John Ralls"></imagedata>
               </imageobject>
 
               <caption>
@@ -1872,12 +1872,12 @@ Translators:
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup_Setup.png"
-                         format="PNG" srccredit="John Ralls" width="510"></imagedata>
+                         srccredit="John Ralls" width="510"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup_Setup.png"
-                         format="PNG" srccredit="John Ralls"></imagedata>
+                         srccredit="John Ralls"></imagedata>
               </imageobject>
 
               <caption>
@@ -1900,12 +1900,12 @@ Translators:
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup_Finish.png"
-                         format="PNG" srccredit="John Ralls" width="510"></imagedata>
+                         srccredit="John Ralls" width="510"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup_Finish.png"
-                         format="PNG" srccredit="John Ralls"></imagedata>
+                         srccredit="John Ralls"></imagedata>
               </imageobject>
 
               <caption>
@@ -1933,12 +1933,12 @@ Translators:
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/basics_EmptyAccounts.png"
-                           format="PNG" srccredit="Frank H. Ellenberger" width="510"></imagedata>
+                           srccredit="Frank H. Ellenberger" width="510"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/basics_EmptyAccounts.png"
-                           format="PNG" srccredit="Frank H. Ellenberger"></imagedata>
+                           srccredit="Frank H. Ellenberger"></imagedata>
               </imageobject>
             </mediaobject>
           </screenshot>
diff --git a/guide/C/ch_bus_features.xml b/guide/C/ch_bus_features.xml
index a7756384..263fa4ab 100644
--- a/guide/C/ch_bus_features.xml
+++ b/guide/C/ch_bus_features.xml
@@ -178,12 +178,12 @@
         <title>Sales Tax Tables Editor</title><screenshot id="bus-taxmain">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/bus_tax_main.png" format="PNG"
+              <imagedata fileref="figures/bus_tax_main.png"
                          srccredit="Chris Good" width="510px" />
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/bus_tax_main.png" format="PNG"
+              <imagedata fileref="figures/bus_tax_main.png"
                         srccredit="Chris Good" />
             </imageobject>
 
@@ -198,7 +198,7 @@
         <title>New Sales Tax Table Entry</title><screenshot id="bus-taxnew">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/bus_tax_new.png" format="PNG"
+              <imagedata fileref="figures/bus_tax_new.png"
                          srccredit="Chris Good" />
             </imageobject>
 
@@ -544,7 +544,7 @@
         <title>Entering Company Information</title><screenshot id="bus-co-reg">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/bus_co_reg.png" format="PNG"
+              <imagedata fileref="figures/bus_co_reg.png"
                         srccredit="Chris Good" />
             </imageobject>
 
@@ -641,7 +641,7 @@
         <title>Billing Terms Editor</title><screenshot id="bus-termsmain">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/bus_terms_main.png" format="PNG"
+              <imagedata fileref="figures/bus_terms_main.png"
                         srccredit="Chris Good" />
             </imageobject>
 
@@ -656,7 +656,7 @@
         <title>New Billing Term</title><screenshot id="bus-termsnew">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/bus_terms_new.png" format="PNG"
+              <imagedata fileref="figures/bus_terms_new.png"
                          srccredit="Chris Good" />
             </imageobject>
 
@@ -819,7 +819,7 @@
           <title>New Customer Registration Window</title><screenshot id="bus-ar-custnew">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ar_custnew.png" format="PNG"
+                <imagedata fileref="figures/bus_ar_custnew.png"
                             srccredit="Patrick Schweiger" />
               </imageobject>
 
@@ -848,7 +848,7 @@
           <title>Find Customer Window</title><screenshot id="bus-ar-custfind">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ar_custfind.png" format="PNG"
+                <imagedata fileref="figures/bus_ar_custfind.png"
                             srccredit="Patrick Schweiger" />
               </imageobject>
 
@@ -917,7 +917,7 @@
           <title>Creating a New Invoice</title><screenshot id="bus-ar-invoicenew">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ar_invoicenew.png" format="PNG"
+                <imagedata fileref="figures/bus_ar_invoicenew.png"
                             srccredit="Patrick Schweiger" />
               </imageobject>
 
@@ -945,7 +945,7 @@
           <title>Edit Invoice Window</title><screenshot id="bus-ar-invoiceedit">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ar_invoiceedit.png" format="PNG"
+                <imagedata fileref="figures/bus_ar_invoiceedit.png"
                             srccredit="Patrick Schweiger" />
               </imageobject>
 
@@ -974,7 +974,7 @@
           <title>Post Invoice Window</title><screenshot id="bus-ar-invoicepost">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ar_invoicepost.png" format="PNG"
+                <imagedata fileref="figures/bus_ar_invoicepost.png"
                             srccredit="Patrick Schweiger" />
               </imageobject>
 
@@ -1039,7 +1039,7 @@
           <title>Invoice Print Output</title><screenshot id="bus-ar-invoiceprint">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ar_invoiceprint.png" format="PNG"
+                <imagedata fileref="figures/bus_ar_invoiceprint.png"
                             srccredit="Patrick Schweiger" />
               </imageobject>
 
@@ -1130,7 +1130,7 @@
         <title>New Customer Job</title><screenshot id="bus-ar-jobnew">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/bus_ar_jobnew.png" format="PNG"
+              <imagedata fileref="figures/bus_ar_jobnew.png"
                         srccredit="Patrick Schweiger" />
             </imageobject>
 
@@ -1186,12 +1186,12 @@
         <title>Process Customer Payment</title><screenshot id="bus-ar-payment">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/bus_ar_payment.png" format="PNG"
+              <imagedata fileref="figures/bus_ar_payment.png"
                         srccredit="Patrick Schweiger" width="510px" scalefit="0" />
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/bus_ar_payment.png" format="PNG"
+              <imagedata fileref="figures/bus_ar_payment.png"
                         srccredit="Patrick Schweiger" />
             </imageobject>
 
@@ -1240,7 +1240,7 @@
         <title>The New Style Sheet Window</title><screenshot id="bus-ar-invoicechange1">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/bus_ar_invoicechange1.png" format="PNG"
+              <imagedata fileref="figures/bus_ar_invoicechange1.png"
                         srccredit="Cristian Marchi" />
             </imageobject>
 
@@ -1280,12 +1280,12 @@
         <title>HTML Style Sheets Example Window</title><screenshot id="bus-ar-invoicechange2">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/bus_ar_invoicechange2.png" format="PNG"
+              <imagedata fileref="figures/bus_ar_invoicechange2.png"
                         srccredit="Cristian Marchi" width="510"/>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/bus_ar_invoicechange2.png" format="PNG"
+              <imagedata fileref="figures/bus_ar_invoicechange2.png"
                         srccredit="Cristian Marchi"/>
             </imageobject>
 
@@ -1322,7 +1322,7 @@
         <title>HTML Style Sheets Example Output</title><screenshot id="bus-ar-invoicechange3">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/bus_ar_invoicechange3.png" format="PNG"
+              <imagedata fileref="figures/bus_ar_invoicechange3.png"
                         srccredit="Patrick Schweiger" />
             </imageobject>
 
@@ -1424,7 +1424,7 @@
           <title>New Vendor Registration Window</title><screenshot id="bus-ap-vendornew">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ap_vendornew.png" srccredit="Patrick Schweiger" format="PNG"/>
+                <imagedata fileref="figures/bus_ap_vendornew.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -1452,7 +1452,7 @@
           <title>Find Vendor Window</title><screenshot id="bus-ar-vendorfind">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ap_vendorfind.png" srccredit="Patrick Schweiger" format="PNG"/>
+                <imagedata fileref="figures/bus_ap_vendorfind.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -1522,7 +1522,7 @@
           <title>New Bill Registration Window</title><screenshot id="bus-ap-billnew">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ap_billnew.png" srccredit="Patrick Schweiger" format="PNG"/>
+                <imagedata fileref="figures/bus_ap_billnew.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -1548,7 +1548,7 @@
           <title>Edit Bill Window</title><screenshot id="bus-ap-billedit">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ap_billedit.png" srccredit="Patrick Schweiger" format="PNG"/>
+                <imagedata fileref="figures/bus_ap_billedit.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -1575,7 +1575,7 @@
           <title>Post Bill Window</title><screenshot id="bus-ap-billpost">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ap_billpost.png" srccredit="Patrick Schweiger" format="PNG"/>
+                <imagedata fileref="figures/bus_ap_billpost.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -1631,7 +1631,7 @@
         <title>New Vendor Job</title><screenshot id="bus-ap-jobnew">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/bus_ap_jobnew.png" srccredit="Jon Lapham" format="PNG"/>
+              <imagedata fileref="figures/bus_ap_jobnew.png" srccredit="Jon Lapham"/>
             </imageobject>
 
             <textobject>
@@ -1680,11 +1680,11 @@
         <title>Process Vendor Payment</title><screenshot id="bus-ap-payment">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/bus_ap_payment.png" srccredit="Patrick Schweiger" format="PNG" width="510"/>
+              <imagedata fileref="figures/bus_ap_payment.png" srccredit="Patrick Schweiger" width="510"/>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/bus_ap_payment.png" srccredit="Patrick Schweiger" format="PNG"/>
+              <imagedata fileref="figures/bus_ap_payment.png" srccredit="Patrick Schweiger"/>
             </imageobject>
 
             <textobject>
@@ -2049,7 +2049,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/bus_pay_ex1.png"
-                 srccredit="Patrick Schweiger" format="PNG"/>
+                 srccredit="Patrick Schweiger"/>
             </imageobject>
 
             <textobject>
@@ -2222,7 +2222,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/bus_pay_ex2.png"
-                    srccredit="Patrick Schweiger" format="PNG"/>
+                    srccredit="Patrick Schweiger"/>
             </imageobject>
 
             <textobject>
@@ -2254,7 +2254,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/bus_pay_ex3.png"
-                    srccredit="Patrick Schweiger" format="PNG"/>
+                    srccredit="Patrick Schweiger"/>
             </imageobject>
 
             <textobject>
@@ -2276,7 +2276,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/bus_pay_ex4.png"
-                    srccredit="Patrick Schweiger" format="PNG"/>
+                    srccredit="Patrick Schweiger"/>
             </imageobject>
 
             <textobject>
diff --git a/guide/C/ch_capgain.xml b/guide/C/ch_capgain.xml
index 34876bf6..0806c95e 100644
--- a/guide/C/ch_capgain.xml
+++ b/guide/C/ch_capgain.xml
@@ -179,7 +179,7 @@
     <screenshot id="capgain_appmain">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/capgain_appmain.png" format="PNG"
+          <imagedata fileref="figures/capgain_appmain.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -206,7 +206,7 @@
       <screenshot id="capgain_app2main">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/capgain_app2main.png" format="PNG"
+            <imagedata fileref="figures/capgain_app2main.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -345,7 +345,7 @@
           <screenshot id="capgain_app3main">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/capgain_app3main.png" format="PNG"
+                <imagedata fileref="figures/capgain_app3main.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
diff --git a/guide/C/ch_cbook.xml b/guide/C/ch_cbook.xml
index e0af951b..2abdffdf 100644
--- a/guide/C/ch_cbook.xml
+++ b/guide/C/ch_cbook.xml
@@ -203,7 +203,7 @@
       <screenshot id="cbook-gcashdata4">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cbook_gcashdata4.png" format="PNG"
+            <imagedata fileref="figures/cbook_gcashdata4.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -237,7 +237,7 @@
           <screenshot id="cbook-transferin">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_transferin.png" format="PNG"
+                <imagedata fileref="figures/cbook_transferin.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -266,7 +266,7 @@
           <screenshot id="cbook-checkexamp">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_checkexamp.png" format="PNG"
+                <imagedata fileref="figures/cbook_checkexamp.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -294,7 +294,7 @@
           <screenshot id="cbook-atm">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_atm.png" format="PNG"
+                <imagedata fileref="figures/cbook_atm.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -322,7 +322,7 @@
       <screenshot id="cbook-bankstmt">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cbook_bankstmt.png" format="PNG"
+            <imagedata fileref="figures/cbook_bankstmt.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -352,7 +352,7 @@
           <screenshot id="cbook-reconexamp">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_reconexamp.png" format="PNG"
+                <imagedata fileref="figures/cbook_reconexamp.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -387,7 +387,7 @@
           <screenshot id="cbook-servch">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_servch.png" format="PNG"
+                <imagedata fileref="figures/cbook_servch.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -417,7 +417,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cbook_reconciledCheckAct.png"
-                           format="PNG" srccredit="Bengt Thuree" />
+                           srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
@@ -444,7 +444,7 @@
       <screenshot id="cbook-chartaccts5">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cbook_chartaccts5.png" format="PNG"
+            <imagedata fileref="figures/cbook_chartaccts5.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -483,7 +483,7 @@
           <screenshot id="cbook-puttoget2-Cash">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_CashFlow.png" format="PNG"
+                <imagedata fileref="figures/cbook_CashFlow.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -514,7 +514,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cbook_TransactionRptAssets.png"
-                           format="PNG" srccredit="Bengt Thuree" />
+                           srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
@@ -538,7 +538,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cbook_TransactionRptExpenses.png"
-                           format="PNG" srccredit="Bengt Thuree" />
+                           srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
diff --git a/guide/C/ch_cc.xml b/guide/C/ch_cc.xml
index f461613e..16786747 100644
--- a/guide/C/ch_cc.xml
+++ b/guide/C/ch_cc.xml
@@ -236,7 +236,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/cc_Reversing_Transaction_1.png"
-                           format="PNG" srccredit="Bengt Thuree"></imagedata>
+                           srccredit="Bengt Thuree"></imagedata>
             </imageobject>
 
             <textobject>
@@ -258,7 +258,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/cc_Reversing_Transaction_2.png"
-                           format="PNG" srccredit="Bengt Thuree"></imagedata>
+                           srccredit="Bengt Thuree"></imagedata>
             </imageobject>
 
             <textobject>
@@ -302,7 +302,7 @@
       <screenshot id="cc-accounts">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_accounts.png" format="PNG"
+            <imagedata fileref="figures/cc_accounts.png"
                      srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -338,7 +338,7 @@
       <screenshot id="cc-purchases">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_purchases.png" format="PNG"
+            <imagedata fileref="figures/cc_purchases.png"
                        srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -369,7 +369,7 @@
       <screenshot id="cc-refund">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_refund.png" format="PNG"
+            <imagedata fileref="figures/cc_refund.png"
                        srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -397,7 +397,7 @@
       <screenshot id="cc-interest">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_interest.png" format="PNG"
+            <imagedata fileref="figures/cc_interest.png"
                        srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -431,7 +431,7 @@
       <screenshot id="cc-reconcile-init">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_reconcile_init.png" format="PNG"
+            <imagedata fileref="figures/cc_reconcile_init.png"
                        srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -455,7 +455,7 @@
       <screenshot id="cc-reconcile">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_reconcile.png" format="PNG"
+            <imagedata fileref="figures/cc_reconcile.png"
                        srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -490,7 +490,7 @@
       <screenshot id="cc-payment">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_payment.png" format="PNG"
+            <imagedata fileref="figures/cc_payment.png"
                        srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -512,7 +512,7 @@
       <screenshot id="cc-final">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_final.png" format="PNG"
+            <imagedata fileref="figures/cc_final.png"
                        srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -559,7 +559,7 @@
           <screenshot id="cc-puttoget2-Cash">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cc_CashFlow.png" format="PNG"
+                <imagedata fileref="figures/cc_CashFlow.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -590,7 +590,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cc_TransactionRptVisa.png"
-                           format="PNG" srccredit="Bengt Thuree" />
+                           srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
@@ -613,7 +613,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cc_TransactionRptExpenses.png"
-                           format="PNG" srccredit="Bengt Thuree" />
+                           srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
diff --git a/guide/C/ch_dep.xml b/guide/C/ch_dep.xml
index 0f5ec85f..30617a1a 100644
--- a/guide/C/ch_dep.xml
+++ b/guide/C/ch_dep.xml
@@ -651,7 +651,7 @@
     <screenshot id="dep_example">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/dep_example.png" format="PNG"
+          <imagedata fileref="figures/dep_example.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -684,7 +684,7 @@
     <screenshot id="dep_assetreg">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/dep_assetreg.png" format="PNG"
+          <imagedata fileref="figures/dep_assetreg.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -702,7 +702,7 @@
     <screenshot id="dep_assetmain">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/dep_assetmain.png" format="PNG"
+          <imagedata fileref="figures/dep_assetmain.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
diff --git a/guide/C/ch_invest.xml b/guide/C/ch_invest.xml
index 2fd799c8..e1c98adf 100644
--- a/guide/C/ch_invest.xml
+++ b/guide/C/ch_invest.xml
@@ -330,12 +330,12 @@
       <screenshot id="invest_accountspredef">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_AccountsPredef.png" format="PNG"
+            <imagedata fileref="figures/invest_AccountsPredef.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_AccountsPredef.png" format="PNG"
+            <imagedata fileref="figures/invest_AccountsPredef.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -503,12 +503,12 @@ Income
       <screenshot id="invest-int">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_int1.png" format="PNG"
+            <imagedata fileref="figures/invest_int1.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_int1.png" format="PNG"
+            <imagedata fileref="figures/invest_int1.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -533,12 +533,12 @@ Income
       <screenshot id="invest-int2">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_int2.png" format="PNG"
+            <imagedata fileref="figures/invest_int2.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_int2.png" format="PNG"
+            <imagedata fileref="figures/invest_int2.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -556,12 +556,12 @@ Income
       <screenshot id="invest-int2-1">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_int2-1.png" format="PNG"
+            <imagedata fileref="figures/invest_int2-1.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_int2-1.png" format="PNG"
+            <imagedata fileref="figures/invest_int2-1.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -582,12 +582,12 @@ Income
       <screenshot id="invest-int3">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_int3.png" format="PNG"
+            <imagedata fileref="figures/invest_int3.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_int3.png" format="PNG"
+            <imagedata fileref="figures/invest_int3.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -685,12 +685,12 @@ Income
       <screenshot id="invest-newaccount">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_newaccount.png" format="PNG"
+            <imagedata fileref="figures/invest_newaccount.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_newaccount.png" format="PNG"
+            <imagedata fileref="figures/invest_newaccount.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -768,12 +768,12 @@ Income
               <screenshot id="invest-selectsecurity">
                 <mediaobject>
                   <imageobject role="html">
-                    <imagedata fileref="figures/invest_selectsecurity.png" format="PNG"
+                    <imagedata fileref="figures/invest_selectsecurity.png"
                                 srccredit="Cristian Marchi"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
-                    <imagedata fileref="figures/invest_selectsecurity.png" format="PNG"
+                    <imagedata fileref="figures/invest_selectsecurity.png"
                                 srccredit="Cristian Marchi"></imagedata>
                   </imageobject>
 
@@ -850,12 +850,12 @@ Income
                     <screenshot id="invest-newsecurity">
                       <mediaobject>
                         <imageobject role="html">
-                          <imagedata fileref="figures/invest_newsecurity.png" format="PNG"
+                          <imagedata fileref="figures/invest_newsecurity.png"
                                      srccredit="Cristian Marchi" width="510px"></imagedata>
                         </imageobject>
 
                         <imageobject role="fo">
-                          <imagedata fileref="figures/invest_newsecurity.png" format="PNG"
+                          <imagedata fileref="figures/invest_newsecurity.png"
                                      srccredit="Cristian Marchi"></imagedata>
                         </imageobject>
 
@@ -938,12 +938,12 @@ Income
       <screenshot id="invest-setup-current">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_setup_current.png" format="PNG"
+            <imagedata fileref="figures/invest_setup_current.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_setup_current.png" format="PNG"
+            <imagedata fileref="figures/invest_setup_current.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -1000,12 +1000,12 @@ Income
       <screenshot id="invest-setup-portfolio1">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_setup_portfolio1.png" format="PNG"
+            <imagedata fileref="figures/invest_setup_portfolio1.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_setup_portfolio1.png" format="PNG"
+            <imagedata fileref="figures/invest_setup_portfolio1.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -1103,12 +1103,12 @@ Income
         <screenshot id="invest-setup-portfolio2">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/invest_SetupPortfolio2.png" format="PNG"
+              <imagedata fileref="figures/invest_SetupPortfolio2.png"
                           srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/invest_SetupPortfolio2.png" format="PNG"
+              <imagedata fileref="figures/invest_SetupPortfolio2.png"
                           srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -1159,12 +1159,12 @@ Income
         <screenshot id="invest-setup-portfolio3">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/invest_SetupPortfolio3.png" format="PNG"
+              <imagedata fileref="figures/invest_SetupPortfolio3.png"
                           srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/invest_SetupPortfolio3.png" format="PNG"
+              <imagedata fileref="figures/invest_SetupPortfolio3.png"
                           srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -1276,12 +1276,12 @@ Income
       <screenshot id="invest-peditor">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_peditor.png" format="PNG"
+            <imagedata fileref="figures/invest_peditor.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_peditor.png" format="PNG"
+            <imagedata fileref="figures/invest_peditor.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -1324,12 +1324,12 @@ Income
       <screenshot id="invest-peditor2">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_peditor2.png" format="PNG"
+            <imagedata fileref="figures/invest_peditor2.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_peditor2.png" format="PNG"
+            <imagedata fileref="figures/invest_peditor2.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -1522,12 +1522,12 @@ Income
       <screenshot id="invest-stockvalue">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_stockvalue.png" format="PNG"
+            <imagedata fileref="figures/invest_stockvalue.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_stockvalue.png" format="PNG"
+            <imagedata fileref="figures/invest_stockvalue.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -1568,7 +1568,7 @@ Income
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/invest_stockvalue_report_options.png"
-                       format="PNG" srccredit="John Ralls"></imagedata>
+                       srccredit="John Ralls"></imagedata>
             </imageobject>
 
             <textobject>
@@ -1643,7 +1643,7 @@ Income
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_stockvalue_report.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -2097,12 +2097,12 @@ Income
           <screenshot id="invest-sellstockManProfComb">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_sellstock.png" format="PNG"
+                <imagedata fileref="figures/invest_sellstock.png"
                            srccredit="Chris Good" width="510px"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_sellstock.png" format="PNG"
+                <imagedata fileref="figures/invest_sellstock.png"
                            srccredit="Chris Good"></imagedata>
               </imageobject>
     
@@ -2128,12 +2128,12 @@ Income
             <screenshot id="invest-sellstockManProfComb2">
               <mediaobject>
                 <imageobject role="html">
-                  <imagedata fileref="figures/invest_sellstock2.png" format="PNG"
+                  <imagedata fileref="figures/invest_sellstock2.png"
                              srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
-                    <imagedata fileref="figures/invest_sellstock2.png" format="PNG"
+                    <imagedata fileref="figures/invest_sellstock2.png"
                                srccredit="Chris Good"></imagedata>
                   </imageobject>
 
@@ -2405,12 +2405,12 @@ Income
             <screenshot id="invest-sellstockManProfCombNet">
               <mediaobject>
                 <imageobject role="html">
-                  <imagedata fileref="figures/invest_sellstockManProfCombNet.png" format="PNG"
+                  <imagedata fileref="figures/invest_sellstockManProfCombNet.png"
                               srccredit="Chris Good" width="510px"></imagedata>
                 </imageobject>
     
                 <imageobject role="fo">
-                  <imagedata fileref="figures/invest_sellstockManProfCombNet.png" format="PNG"
+                  <imagedata fileref="figures/invest_sellstockManProfCombNet.png"
                               srccredit="Chris Good"></imagedata>
                 </imageobject>
     
@@ -2802,12 +2802,12 @@ Income
         <screenshot id="invest-sellstockManProfSep">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/invest_sellstockManProfSep.png" format="PNG"
+              <imagedata fileref="figures/invest_sellstockManProfSep.png"
                           srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/invest_sellstockManProfSep.png" format="PNG"
+              <imagedata fileref="figures/invest_sellstockManProfSep.png"
                           srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -3162,12 +3162,12 @@ Income
             <screenshot id="invest-sellstockManProfSepNet">
               <mediaobject>
                 <imageobject role="html">
-                  <imagedata fileref="figures/invest_sellstockManProfSepNet.png" format="PNG"
+                  <imagedata fileref="figures/invest_sellstockManProfSepNet.png"
                               srccredit="Chris Good" width="510px"></imagedata>
                 </imageobject>
     
                 <imageobject role="fo">
-                  <imagedata fileref="figures/invest_sellstockManProfSep.png" format="PNG"
+                  <imagedata fileref="figures/invest_sellstockManProfSep.png"
                               srccredit="Chris Good"></imagedata>
                 </imageobject>
     
@@ -3269,12 +3269,12 @@ Income
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png"
-                format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                srccredit="Chris Good" width="510px"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png"
-                           format="PNG" srccredit="Chris Good"></imagedata>
+                           srccredit="Chris Good"></imagedata>
               </imageobject>
 
               <textobject>
@@ -3634,12 +3634,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                     <imagedata fileref="figures/investLots0_RegB4Scrub.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
                     <imagedata fileref="figures/investLots0_RegB4Scrub.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -3673,12 +3673,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                     <imagedata fileref="figures/investLots1_BeforeCreateLot.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
                     <imagedata fileref="figures/investLots1_BeforeCreateLot.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -3737,12 +3737,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                     <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
                     <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -3776,12 +3776,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                     <imagedata fileref="figures/investLots2_RegAfterScrub1Lot.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
                     <imagedata fileref="figures/investLots2_RegAfterScrub1Lot.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -3875,12 +3875,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
               <mediaobject>
                 <imageobject role="html">
                   <imagedata fileref="figures/invest2Lots0RegB4Scrub.png"
-                  format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                  srccredit="Chris Good" width="510px"></imagedata>
                 </imageobject>
   
                 <imageobject role="fo">
                   <imagedata fileref="figures/invest2Lots0RegB4Scrub.png"
-                             format="PNG" srccredit="Chris Good"></imagedata>
+                             srccredit="Chris Good"></imagedata>
                 </imageobject>
   
                 <textobject>
@@ -3908,12 +3908,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                     <imagedata fileref="figures/invest2Lots1B4Scrub.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
                     <imagedata fileref="figures/invest2Lots1B4Scrub.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -3937,12 +3937,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                     <imagedata fileref="figures/invest2Lots2LotsAftScrubAcct.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
                     <imagedata fileref="figures/invest2Lots2LotsAftScrubAcct.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -3973,12 +3973,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                     <imagedata fileref="figures/invest2Lots3RegAftScrubAcct.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
                     <imagedata fileref="figures/invest2Lots3RegAftScrubAcct.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -4022,12 +4022,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/investLotsSplitReg.png"
-                format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                srccredit="Chris Good" width="510px"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/investLotsSplitReg.png"
-                           format="PNG" srccredit="Chris Good"></imagedata>
+                           srccredit="Chris Good"></imagedata>
               </imageobject>
 
               <textobject>
@@ -4047,12 +4047,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/investLotsSplitLot0.png"
-                format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                srccredit="Chris Good" width="510px"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/investLotsSplitLot0.png"
-                           format="PNG" srccredit="Chris Good"></imagedata>
+                           srccredit="Chris Good"></imagedata>
               </imageobject>
 
               <textobject>
@@ -4072,12 +4072,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/investLotsSplitLot1.png"
-                format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                srccredit="Chris Good" width="510px"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/investLotsSplitLot1.png"
-                           format="PNG" srccredit="Chris Good"></imagedata>
+                           srccredit="Chris Good"></imagedata>
               </imageobject>
 
               <textobject>
@@ -4130,12 +4130,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                     <imagedata fileref="figures/investLots2_RegAfterScrub1Lot.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
                     <imagedata fileref="figures/investLots2_RegAfterScrub1Lot.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -4200,12 +4200,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject role="html">
             <imagedata fileref="figures/invest_dividendcash.png"
-                       format="PNG" srccredit="Daniel Dodson" width="510px"></imagedata>
+                       srccredit="Daniel Dodson" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
             <imagedata fileref="figures/invest_dividendcash.png"
-                       format="PNG" srccredit="Daniel Dodson"></imagedata>
+                       srccredit="Daniel Dodson"></imagedata>
           </imageobject>
 
           <textobject>
@@ -4251,12 +4251,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
       <screenshot id="invest-dividendreinvest1">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_dividendreinvest1.png" format="PNG"
+            <imagedata fileref="figures/invest_dividendreinvest1.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_dividendreinvest1.png" format="PNG"
+            <imagedata fileref="figures/invest_dividendreinvest1.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -4327,12 +4327,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
     <screenshot id="invest-ret-of-cap">
       <mediaobject>
         <imageobject role="html">
-          <imagedata fileref="figures/invest_ret_of_cap.png" format="PNG"
+          <imagedata fileref="figures/invest_ret_of_cap.png"
                       srccredit="Chris Good" width="510px"></imagedata>
         </imageobject>
 
         <imageobject role="fo">
-          <imagedata fileref="figures/invest_ret_of_cap.png" format="PNG"
+          <imagedata fileref="figures/invest_ret_of_cap.png"
                       srccredit="Chris Good"></imagedata>
         </imageobject>
 
@@ -4390,7 +4390,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_split1.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -4413,7 +4413,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_split2.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -4473,7 +4473,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_split3.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -4494,7 +4494,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_split4.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -4517,7 +4517,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_simplesplit1.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -4561,7 +4561,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_merge2.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -4623,7 +4623,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_merge3.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -4649,7 +4649,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_stockmerge1.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
diff --git a/guide/C/ch_loans.xml b/guide/C/ch_loans.xml
index 248906b2..03384651 100644
--- a/guide/C/ch_loans.xml
+++ b/guide/C/ch_loans.xml
@@ -202,7 +202,7 @@
     <screenshot id="loans_fcalc">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/loans_fcalc.png" format="PNG"
+          <imagedata fileref="figures/loans_fcalc.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -478,7 +478,7 @@ The simple case for when  PMT == 0 gives the solution:
     <screenshot id="loans_mortgage">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/loans_mortgage1.png" format="PNG"
+          <imagedata fileref="figures/loans_mortgage1.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -576,7 +576,7 @@ The simple case for when  PMT == 0 gives the solution:
     <screenshot id="loans_mortgage2.png">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/loans_mortgage2.png" format="PNG"
+          <imagedata fileref="figures/loans_mortgage2.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -597,7 +597,7 @@ The simple case for when  PMT == 0 gives the solution:
     <screenshot id="loans_mortgage3">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/loans_mortgage3.png" format="PNG"
+          <imagedata fileref="figures/loans_mortgage3.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -710,7 +710,7 @@ The simple case for when  PMT == 0 gives the solution:
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanCalculation.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -815,7 +815,7 @@ The simple case for when  PMT == 0 gives the solution:
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanInitial.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -871,7 +871,7 @@ The simple case for when  PMT == 0 gives the solution:
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanFirstPayment.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -930,7 +930,7 @@ The simple case for when  PMT == 0 gives the solution:
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanSecondPayment.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -954,7 +954,7 @@ The simple case for when  PMT == 0 gives the solution:
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanSecondPaymentAccounts.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
diff --git a/guide/C/ch_oview.xml b/guide/C/ch_oview.xml
index 3a8daa45..39fc7012 100644
--- a/guide/C/ch_oview.xml
+++ b/guide/C/ch_oview.xml
@@ -38,12 +38,12 @@
     <screenshot id="oview-intro">
       <mediaobject>
         <imageobject role="html">
-          <imagedata fileref="figures/oview_intro.png" format="PNG"
+          <imagedata fileref="figures/oview_intro.png"
                      srccredit="Bengt Thuree" width="510"></imagedata>
         </imageobject>
 
         <imageobject role="fo">
-          <imagedata fileref="figures/oview_intro.png" format="PNG"
+          <imagedata fileref="figures/oview_intro.png"
                      srccredit="Bengt Thuree"></imagedata>
         </imageobject>
 
diff --git a/guide/C/ch_txns.xml b/guide/C/ch_txns.xml
index 4e3511ea..52f6dfc7 100644
--- a/guide/C/ch_txns.xml
+++ b/guide/C/ch_txns.xml
@@ -129,7 +129,7 @@
       <screenshot id="txns-registersplit4">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_registersplit4.png" format="PNG"
+            <imagedata fileref="figures/txns_registersplit4.png"
                 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -151,7 +151,7 @@
       <screenshot id="txns-registersplit5">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_registersplit5.png" format="PNG"
+            <imagedata fileref="figures/txns_registersplit5.png"
                 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -178,7 +178,7 @@
       <screenshot id="txns-registersplit6">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_registersplit6.png" format="PNG"
+            <imagedata fileref="figures/txns_registersplit6.png"
                 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -480,7 +480,7 @@
     <screenshot id="txns-registersplit2">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/txns_registersplit2.png" format="PNG"
+          <imagedata fileref="figures/txns_registersplit2.png"
             srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -522,7 +522,7 @@
     <screenshot id="txns-registersplit3">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/txns_registersplit3.png" format="PNG"
+          <imagedata fileref="figures/txns_registersplit3.png"
             srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -564,7 +564,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_register_2account.png"
-                       format="PNG" srccredit="Bengt  Thuree" />
+                       srccredit="Bengt  Thuree" />
           </imageobject>
 
           <textobject>
@@ -594,7 +594,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_register_2account2.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -668,7 +668,7 @@
         <title>Entering a split transaction</title><mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_register_multiaccount.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -755,12 +755,12 @@
         <mediaobject>
           <imageobject role="html">
             <imagedata fileref="figures/txns_reconcile_window1.png"
-                         format="PNG" srccredit="Cristian Marchi"></imagedata>
+                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
             <imagedata fileref="figures/txns_reconcile_window1.png"
-                         format="PNG" srccredit="Cristian Marchi"></imagedata>
+                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
           <textobject>
@@ -896,12 +896,12 @@
         <mediaobject>
           <imageobject role="html">
             <imagedata fileref="figures/txns_reconcile_window2.png"
-                         format="PNG" srccredit="Cristian Marchi" width="510"></imagedata>
+                         srccredit="Cristian Marchi" width="510"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
             <imagedata fileref="figures/txns_reconcile_window2.png"
-                         format="PNG" srccredit="Cristian Marchi"></imagedata>
+                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
           <textobject>
@@ -1011,7 +1011,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_reconcile_window3.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -1057,7 +1057,7 @@
       <screenshot id="txns-sxn-ledger-1">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_sxn_ledger1.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_ledger1.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -1084,7 +1084,7 @@
       <screenshot id="txns-sxn-ledger-2">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_sxn_ledger2.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_ledger2.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -1105,7 +1105,7 @@
       <screenshot id="txns-sxn-ledger-3">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_sxn_ledger3.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_ledger3.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -1127,7 +1127,7 @@
       <screenshot id="txns-sxn-ledger-4">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_sxn_ledger4.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_ledger4.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -1166,12 +1166,12 @@
       <screenshot id="txns-sxn-editor-2">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor-2.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-2.png"
                        srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor-2.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-2.png"
                        srccredit="Cristian Marchi"/>
           </imageobject>
 
@@ -1194,12 +1194,12 @@
       <screenshot id="txns-sxn-editor-3-overview">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor-3-overview.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-overview.png"
                        srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor-3-overview.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-overview.png"
                        srccredit="Cristian Marchi" />
           </imageobject>
 
@@ -1282,12 +1282,12 @@
       <screenshot id="txns-sxn-editor-3-frequency">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor-3-frequency.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-frequency.png"
                        srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor-3-frequency.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-frequency.png"
                        srccredit="Cristian Marchi" />
           </imageobject>
 
@@ -1379,12 +1379,12 @@
       <screenshot id="txns-sxn-editor-3-template">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor-3-template.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-template.png"
                        srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor-3-template.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-template.png"
                        srccredit="Cristian Marchi" />
           </imageobject>
 
@@ -1411,12 +1411,12 @@
       <screenshot id="txns-sxn-editor-4">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor-4.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-4.png"
                        srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor-4.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-4.png"
                        srccredit="Cristian Marchi" />
           </imageobject>
 
@@ -1458,12 +1458,12 @@
       <screenshot id="txns-sxn-editor-slr">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor_slr.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor_slr.png"
                        srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor_slr.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor_slr.png"
                        srccredit="Cristian Marchi" />
           </imageobject>
 
@@ -1526,7 +1526,7 @@
       <screenshot id="txns-puttoget1-Charts">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_puttoget_Charts.png" format="PNG"
+            <imagedata fileref="figures/txns_puttoget_Charts.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -1600,7 +1600,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_puttoget_Charts1.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -1719,7 +1719,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_puttoget_Charts2.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -1772,7 +1772,7 @@
           <screenshot id="txns-puttoget2-Cash">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_CashFlow.png" format="PNG"
+                <imagedata fileref="figures/txns_CashFlow.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -1807,7 +1807,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/txns_TransactionRptChecking.png"
-                           format="PNG" srccredit="Bengt Thuree" />
+                           srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
@@ -1830,7 +1830,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/txns_TransactionRptExpenses.png"
-                           format="PNG" srccredit="Bengt Thuree" />
+                           srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
diff --git a/guide/de/ch_accts.xml b/guide/de/ch_accts.xml
index 4641ec5d..f22560fc 100644
--- a/guide/de/ch_accts.xml
+++ b/guide/de/ch_accts.xml
@@ -52,7 +52,7 @@
         <imageobject>
           <imagedata fileref="figures/basics_AccountRelationships.png"
                      srccredit="Frank H. Ellenberger"
-                     format="PNG"></imagedata>
+                    ></imagedata>
         </imageobject>
 
         <imageobject role="fo">
@@ -378,7 +378,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/accts_DefaultIncomeAccounts.png"
-                         format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <textobject>
@@ -396,7 +396,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/accts_DefaultExpenseAccounts.png"
-                         format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <textobject>
@@ -504,7 +504,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/accts_CreateAssetsAccount.png"
-                             format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                             srccredit="Mechtilde Stehmann"></imagedata>
               </imageobject>
 
               <textobject>
@@ -551,7 +551,7 @@
       <screenshot id="accts-toplevel">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/accts_toplevel.png" format="PNG"
+            <imagedata fileref="figures/accts_toplevel.png"
                        srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -684,7 +684,7 @@
       <screenshot id="accts-tree">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/accts_tree.png" format="PNG"
+            <imagedata fileref="figures/accts_tree.png"
                        srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
diff --git a/guide/de/ch_basics.xml b/guide/de/ch_basics.xml
index 8470ae85..9b323c0d 100644
--- a/guide/de/ch_basics.xml
+++ b/guide/de/ch_basics.xml
@@ -138,7 +138,7 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/basics_AccountRelationships.png"
-                         format="PNG" srccredit="Frank H. Ellenberger"></imagedata>
+                         srccredit="Frank H. Ellenberger"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
@@ -353,7 +353,7 @@
           <imageobject>
             <imagedata fileref="figures/gnc_welcome.png"
                          srccredit="JH"
-                         format="PNG"></imagedata>
+                        ></imagedata>
           </imageobject>
 
           <textobject>
@@ -388,7 +388,7 @@
             <imageobject>
               <imagedata fileref="figures/basics_TipOfDay.png"
                          srccredit="Chris Lyttle"
-                         format="PNG"></imagedata>
+                        ></imagedata>
             </imageobject>
 
             <textobject>
@@ -436,7 +436,7 @@
             <imageobject>
               <imagedata fileref="figures/basics_Accounts.png"
                          srccredit="Chris Lyttle"
-                         format="PNG"></imagedata>
+                        ></imagedata>
             </imageobject>
 
             <textobject>
@@ -512,7 +512,7 @@
             <imageobject>
               <imagedata fileref="figures/basics_CheckAccount.png"
                          srccredit="Chris Lyttle"
-                         format="PNG"></imagedata>
+                        ></imagedata>
             </imageobject>
 
             <textobject>
@@ -910,12 +910,12 @@
                 <title>Speichern, wenn <acronym>XML</acronym> oder <acronym>sqlite3</acronym> ausgewählt ist.</title><screenshot id="basics-SaveXML">
                   <mediaobject>
                     <imageobject role="html">
-                      <imagedata fileref="figures/basics_SaveXML.png" format="PNG"
+                      <imagedata fileref="figures/basics_SaveXML.png"
                          srccredit="Mechtilde Stehmann" width="510px"></imagedata>
                     </imageobject>
 
                     <imageobject role="fo">
-                      <imagedata fileref="figures/basics_SaveXML.png" format="PNG"
+                      <imagedata fileref="figures/basics_SaveXML.png"
                          srccredit="Mechtilde Stehmann"></imagedata>
                     </imageobject>
 
@@ -969,12 +969,12 @@
                 <title>Speicherdialog, wenn <acronym>mysql</acronym> oder <acronym>postgres</acronym> ausgewählt ist.</title><screenshot id="basics-SaveSQL">
                   <mediaobject>
                     <imageobject role="html">
-                      <imagedata fileref="figures/basics_SaveSQL.png" format="PNG"
+                      <imagedata fileref="figures/basics_SaveSQL.png"
                              srccredit="Mechtilde Stehmann" width="510px"></imagedata>
                     </imageobject>
 
                     <imageobject role="fo">
-                      <imagedata fileref="figures/basics_SaveSQL.png" format="PNG"
+                      <imagedata fileref="figures/basics_SaveSQL.png"
                              srccredit="Mechtilde Stehmann"></imagedata>
                     </imageobject>
 
@@ -1259,7 +1259,7 @@ gcashdata.gnucash.7f0982.12093.LNK gcashdata.gnucash.LCK
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/basics_lock.png"
-            srccredit="J.H." format="PNG"></imagedata>
+            srccredit="J.H."></imagedata>
           </imageobject>
 
           <textobject>
@@ -1587,12 +1587,12 @@ gcashdata.gnucash.7f0982.12093.LNK gcashdata.gnucash.LCK
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup.png"
-                         format="PNG" srccredit="Frank H. Ellenberger" width="510"></imagedata>
+                         srccredit="Frank H. Ellenberger" width="510"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup.png"
-                         format="PNG" srccredit="Frank H. Ellenberger"></imagedata>
+                         srccredit="Frank H. Ellenberger"></imagedata>
               </imageobject>
 
               <caption>
@@ -1628,12 +1628,12 @@ gcashdata.gnucash.7f0982.12093.LNK gcashdata.gnucash.LCK
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/basics_NewBookOpts.png"
-                         format="PNG" srccredit="Frank H. Ellenberger" width="510"></imagedata>
+                         srccredit="Frank H. Ellenberger" width="510"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/basics_NewBookOpts.png"
-                         format="PNG" srccredit="Frank H. Ellenberger"></imagedata>
+                         srccredit="Frank H. Ellenberger"></imagedata>
               </imageobject>
 
               <caption>
@@ -1662,12 +1662,12 @@ gcashdata.gnucash.7f0982.12093.LNK gcashdata.gnucash.LCK
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup_currency.png"
-                         format="PNG" srccredit="Frank H. Ellenberger" width="510"></imagedata>
+                         srccredit="Frank H. Ellenberger" width="510"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup_currency.png"
-                         format="PNG" srccredit="Frank H. Ellenberger"></imagedata>
+                         srccredit="Frank H. Ellenberger"></imagedata>
               </imageobject>
 
               <caption>
@@ -1698,12 +1698,12 @@ gcashdata.gnucash.7f0982.12093.LNK gcashdata.gnucash.LCK
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup_Accounts.png"
-                         format="PNG" srccredit="Frank H. Ellenberger" width="510"></imagedata>
+                         srccredit="Frank H. Ellenberger" width="510"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup_Accounts.png"
-                         format="PNG" srccredit="Frank H. Ellenberger"></imagedata>
+                         srccredit="Frank H. Ellenberger"></imagedata>
               </imageobject>
 
               <caption>
@@ -1730,12 +1730,12 @@ gcashdata.gnucash.7f0982.12093.LNK gcashdata.gnucash.LCK
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup_Setup.png"
-                         format="PNG" srccredit="Frank H. Ellenberger" width="510"></imagedata>
+                         srccredit="Frank H. Ellenberger" width="510"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup_Setup.png"
-                         format="PNG" srccredit="Frank H. Ellenberger"></imagedata>
+                         srccredit="Frank H. Ellenberger"></imagedata>
               </imageobject>
 
               <caption>
@@ -1758,12 +1758,12 @@ gcashdata.gnucash.7f0982.12093.LNK gcashdata.gnucash.LCK
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup_Finish.png"
-                         format="PNG" srccredit="Frank H. Ellenberger" width="510"></imagedata>
+                         srccredit="Frank H. Ellenberger" width="510"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/basics_NewAccountHierarchySetup_Finish.png"
-                         format="PNG" srccredit="Frank H. Ellenberger"></imagedata>
+                         srccredit="Frank H. Ellenberger"></imagedata>
               </imageobject>
 
               <caption>
@@ -1793,12 +1793,12 @@ gcashdata.gnucash.7f0982.12093.LNK gcashdata.gnucash.LCK
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/basics_EmptyAccounts.png"
-                           format="PNG" srccredit="Frank H. Ellenberger"></imagedata>
+                           srccredit="Frank H. Ellenberger"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/basics_EmptyAccounts.png"
-                           format="PNG" srccredit="Frank H. Ellenberger"></imagedata>
+                           srccredit="Frank H. Ellenberger"></imagedata>
               </imageobject>
             </mediaobject>
           </screenshot>
diff --git a/guide/de/ch_bus_ap.xml b/guide/de/ch_bus_ap.xml
index 56577fb2..d32a49d8 100644
--- a/guide/de/ch_bus_ap.xml
+++ b/guide/de/ch_bus_ap.xml
@@ -111,7 +111,7 @@ corrected to be less describing of the interface and more tutorial oriented
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_ap_vendornew.png" 
-            srccredit="Mechtilde Stehmann" format="PNG"/>
+            srccredit="Mechtilde Stehmann"/>
           </imageobject>
 
           <textobject>
@@ -143,7 +143,7 @@ corrected to be less describing of the interface and more tutorial oriented
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_ap_vendorfind.png" 
-            srccredit="Mechtilde Stehmann" format="PNG"/>
+            srccredit="Mechtilde Stehmann"/>
           </imageobject>
 
           <textobject>
@@ -220,7 +220,7 @@ corrected to be less describing of the interface and more tutorial oriented
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_ap_billnew.png" 
-            srccredit="Mechtilde Stehmann" format="PNG"/>
+            srccredit="Mechtilde Stehmann"/>
           </imageobject>
 
           <textobject>
@@ -252,7 +252,7 @@ corrected to be less describing of the interface and more tutorial oriented
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_ap_billedit.png" 
-            srccredit="Mechtilde Stehmann" format="PNG"/>
+            srccredit="Mechtilde Stehmann"/>
           </imageobject>
 
           <textobject>
@@ -286,7 +286,7 @@ corrected to be less describing of the interface and more tutorial oriented
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_ap_billpost.png" 
-            srccredit="Mechtilde Stehmann" format="PNG"/>
+            srccredit="Mechtilde Stehmann"/>
           </imageobject>
 
           <textobject>
@@ -349,7 +349,7 @@ corrected to be less describing of the interface and more tutorial oriented
       <mediaobject>
         <imageobject>
           <imagedata fileref="figures/bus_ap_jobnew.png" 
-            srccredit="Mechtilde Stehmann" format="PNG"/>
+            srccredit="Mechtilde Stehmann"/>
         </imageobject>
 
         <textobject>
@@ -404,7 +404,7 @@ corrected to be less describing of the interface and more tutorial oriented
       <mediaobject>
         <imageobject>
           <imagedata fileref="figures/bus_ap_payment.png" 
-            srccredit="Mechtilde Stehmann" format="PNG"/>
+            srccredit="Mechtilde Stehmann"/>
         </imageobject>
 
         <textobject>
diff --git a/guide/de/ch_bus_ar.xml b/guide/de/ch_bus_ar.xml
index 61f5ac54..0e36823b 100644
--- a/guide/de/ch_bus_ar.xml
+++ b/guide/de/ch_bus_ar.xml
@@ -103,7 +103,7 @@ corrected to be less describing of the interface and more tutorial oriented
       <screenshot id="bus-ar-custnew">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/bus_ar_custnew.png" format="PNG"
+            <imagedata fileref="figures/bus_ar_custnew.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -135,7 +135,7 @@ corrected to be less describing of the interface and more tutorial oriented
       <screenshot id="bus-ar-custfind">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/bus_ar_custfind.png" format="PNG"
+            <imagedata fileref="figures/bus_ar_custfind.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -211,7 +211,7 @@ corrected to be less describing of the interface and more tutorial oriented
       <screenshot id="bus-ar-invoicenew">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/bus_ar_invoicenew.png" format="PNG"
+            <imagedata fileref="figures/bus_ar_invoicenew.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -243,7 +243,7 @@ corrected to be less describing of the interface and more tutorial oriented
       <screenshot id="bus-ar-invoiceedit">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/bus_ar_invoiceedit.png" format="PNG"
+            <imagedata fileref="figures/bus_ar_invoiceedit.png"
                        srccredit="Mechtilde stehmann" />
           </imageobject>
 
@@ -275,7 +275,7 @@ corrected to be less describing of the interface and more tutorial oriented
       <screenshot id="bus-ar-invoicepost">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/bus_ar_invoicepost.png" format="PNG"
+            <imagedata fileref="figures/bus_ar_invoicepost.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -346,7 +346,7 @@ corrected to be less describing of the interface and more tutorial oriented
       <screenshot id="bus-ar-invoiceprint">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/bus_ar_invoiceprint.png" format="PNG"
+            <imagedata fileref="figures/bus_ar_invoiceprint.png"
                        srccredit="Mechtilde Stehmann " />
           </imageobject>
 
@@ -444,7 +444,7 @@ corrected to be less describing of the interface and more tutorial oriented
     <screenshot id="bus-ar-jobnew">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/bus_ar_jobnew.png" format="PNG"
+          <imagedata fileref="figures/bus_ar_jobnew.png"
                      srccredit="Mechtilde Stehmann" />
         </imageobject>
 
@@ -505,7 +505,7 @@ corrected to be less describing of the interface and more tutorial oriented
     <screenshot id="bus-ar-payment">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/bus_ar_payment.png" format="PNG"
+          <imagedata fileref="figures/bus_ar_payment.png"
                      srccredit="Mechtilde Stehmann" />
         </imageobject>
 
@@ -552,7 +552,7 @@ corrected to be less describing of the interface and more tutorial oriented
     <screenshot id="bus-ar-invoicechange1">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/bus_ar_invoicechange1.png" format="PNG"
+          <imagedata fileref="figures/bus_ar_invoicechange1.png"
                      srccredit="Mechtilde Stehmann" />
         </imageobject>
 
@@ -597,12 +597,12 @@ corrected to be less describing of the interface and more tutorial oriented
     <screenshot id="bus-ar-invoicechange2">
       <mediaobject>
         <imageobject role="html">
-          <imagedata fileref="figures/bus_ar_invoicechange2.png" format="PNG"
+          <imagedata fileref="figures/bus_ar_invoicechange2.png"
                      srccredit="Mechtilde Stehmann" width="510"/>
         </imageobject>
 
         <imageobject role="fo">
-          <imagedata fileref="figures/bus_ar_invoicechange2.png" format="PNG"
+          <imagedata fileref="figures/bus_ar_invoicechange2.png"
                      srccredit="Mechtilde Stehmann"/>
         </imageobject>
 
@@ -637,7 +637,7 @@ corrected to be less describing of the interface and more tutorial oriented
     <screenshot id="bus-ar-invoicechange3">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/bus_ar_invoicechange3.png" format="PNG"
+          <imagedata fileref="figures/bus_ar_invoicechange3.png"
                      srccredit="Patrick Schweiger" />
         </imageobject>
 
diff --git a/guide/de/ch_bus_pay.xml b/guide/de/ch_bus_pay.xml
index 4a2a4d5f..92c271bf 100644
--- a/guide/de/ch_bus_pay.xml
+++ b/guide/de/ch_bus_pay.xml
@@ -326,7 +326,7 @@
       <mediaobject>
         <imageobject>
           <imagedata fileref="figures/bus_pay_ex1.png" 
-	      srccredit="Patrick Schweiger" format="PNG"/>
+	      srccredit="Patrick Schweiger"/>
         </imageobject>
 
         <textobject>
@@ -492,7 +492,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_pay_ex2.png" 
-	      srccredit="Patrick Schweiger" format="PNG"/>
+	      srccredit="Patrick Schweiger"/>
           </imageobject>
 
           <textobject>
@@ -522,7 +522,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_pay_ex3.png" 
-	      srccredit="Patrick Schweiger" format="PNG"/>
+	      srccredit="Patrick Schweiger"/>
           </imageobject>
 
           <textobject>
@@ -551,7 +551,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_pay_ex4.png" 
-	      srccredit="Patrick Schweiger" format="PNG"/>
+	      srccredit="Patrick Schweiger"/>
           </imageobject>
 
           <textobject>
diff --git a/guide/de/ch_bus_setup.xml b/guide/de/ch_bus_setup.xml
index 5353dacb..5f329458 100644
--- a/guide/de/ch_bus_setup.xml
+++ b/guide/de/ch_bus_setup.xml
@@ -163,12 +163,12 @@
       <title>Steuertabellen</title><screenshot id="bus-taxmain">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/bus_tax_main.png" format="PNG"
+            <imagedata fileref="figures/bus_tax_main.png"
                          srccredit="Mechtilde Stehmann" width="510px" />
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/bus_tax_main.png" format="PNG"
+            <imagedata fileref="figures/bus_tax_main.png"
                         srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -183,12 +183,12 @@
       <title>Neue Steuertabellen</title><screenshot id="bus-taxnew">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/bus_tax_new.png" format="PNG"
+            <imagedata fileref="figures/bus_tax_new.png"
                          srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/bus_tax_new.png" format="PNG"
+            <imagedata fileref="figures/bus_tax_new.png"
                          srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -255,12 +255,12 @@
       <title>Unternehmensregistrierung</title><screenshot id="bus-co-reg">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/bus_co_reg.png" format="PNG"
+            <imagedata fileref="figures/bus_co_reg.png"
                          srccredit="Mechtilde Stehmann" width="510px" />
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/bus_co_reg.png" format="PNG"
+            <imagedata fileref="figures/bus_co_reg.png"
                         srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -365,12 +365,12 @@
       <title>Zahlungsbedingungen-Editor</title><screenshot id="bus-termsmain">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/bus_terms_main.png" format="PNG"
+            <imagedata fileref="figures/bus_terms_main.png"
                          srccredit="Mechtilde Stehmann" width="510px" />
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/bus_terms_main.png" format="PNG"
+            <imagedata fileref="figures/bus_terms_main.png"
                         srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -385,12 +385,12 @@
       <title>Neue Zahlungsbedingungen</title><screenshot id="bus-termsnew">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/bus_terms_new.png" format="PNG"
+            <imagedata fileref="figures/bus_terms_new.png"
                          srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/bus_terms_new.png" format="PNG"
+            <imagedata fileref="figures/bus_terms_new.png"
                          srccredit="Mechtilde Stehmann" />
           </imageobject>
 
diff --git a/guide/de/ch_capgain.xml b/guide/de/ch_capgain.xml
index 0d408b18..746b41e1 100644
--- a/guide/de/ch_capgain.xml
+++ b/guide/de/ch_capgain.xml
@@ -182,7 +182,7 @@
     <screenshot id="capgain_appmain">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/capgain_appmain.png" format="PNG"
+          <imagedata fileref="figures/capgain_appmain.png"
                      srccredit="Mechtilde Stehmann" />
         </imageobject>
 
@@ -212,7 +212,7 @@
       <screenshot id="capgain_app2main">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/capgain_app2main.png" format="PNG"
+            <imagedata fileref="figures/capgain_app2main.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -354,7 +354,7 @@
           <screenshot id="capgain_app3main">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/capgain_app3main.png" format="PNG"
+                <imagedata fileref="figures/capgain_app3main.png"
                            srccredit="Mechtilde Stehmann" />
               </imageobject>
 
diff --git a/guide/de/ch_cbook.xml b/guide/de/ch_cbook.xml
index 34a3e80c..2cb1addc 100644
--- a/guide/de/ch_cbook.xml
+++ b/guide/de/ch_cbook.xml
@@ -216,7 +216,7 @@
       <screenshot id="cbook-gcashdata4">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cbook_gcashdata4.png" format="PNG"
+            <imagedata fileref="figures/cbook_gcashdata4.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -251,7 +251,7 @@
           <screenshot id="cbook-transferin">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_transferin.png" format="PNG"
+                <imagedata fileref="figures/cbook_transferin.png"
                            srccredit="Mechtilde Stehmann" />
               </imageobject>
 
@@ -282,7 +282,7 @@
           <screenshot id="cbook-checkexamp">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_checkexamp.png" format="PNG"
+                <imagedata fileref="figures/cbook_checkexamp.png"
                            srccredit="Mechtilde Stehmann" />
               </imageobject>
 
@@ -310,7 +310,7 @@
           <screenshot id="cbook-atm">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_atm.png" format="PNG"
+                <imagedata fileref="figures/cbook_atm.png"
                            srccredit="Mechtilde Stehmann" />
               </imageobject>
 
@@ -338,7 +338,7 @@
       <screenshot id="cbook-bankstmt">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cbook_bankstmt.png" format="PNG"
+            <imagedata fileref="figures/cbook_bankstmt.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -368,7 +368,7 @@
           <screenshot id="cbook-reconexamp">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_reconexamp.png" format="PNG"
+                <imagedata fileref="figures/cbook_reconexamp.png"
                            srccredit="Mechtilde Stehmann" />
               </imageobject>
 
@@ -404,7 +404,7 @@
           <screenshot id="cbook-servch">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_servch.png" format="PNG"
+                <imagedata fileref="figures/cbook_servch.png"
                            srccredit="Mechtilde Stehmann" />
               </imageobject>
 
@@ -435,7 +435,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cbook_reconciledCheckAct.png"  
-                           format="PNG" srccredit="Mechtilde Stehmann" />
+                           srccredit="Mechtilde Stehmann" />
               </imageobject>
 
               <textobject>
@@ -463,7 +463,7 @@
       <screenshot id="cbook-chartaccts5">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cbook_chartaccts5.png" format="PNG"
+            <imagedata fileref="figures/cbook_chartaccts5.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -502,7 +502,7 @@
           <screenshot id="cbook-puttoget2-Cash">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_CashFlow.png" format="PNG"
+                <imagedata fileref="figures/cbook_CashFlow.png"
                            srccredit="Mechtilde Stehmann" />
               </imageobject>
 
@@ -533,7 +533,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cbook_TransactionRptAssets.png" 
-                           format="PNG" srccredit="Mechtilde Stehmann" />
+                           srccredit="Mechtilde Stehmann" />
               </imageobject>
 
               <textobject>
@@ -557,7 +557,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cbook_TransactionRptExpenses.png" 
-                           format="PNG" srccredit="Mechtilde Stehmann" />
+                           srccredit="Mechtilde Stehmann" />
               </imageobject>
 
               <textobject>
diff --git a/guide/de/ch_cc.xml b/guide/de/ch_cc.xml
index 65d6ab08..97cf5739 100644
--- a/guide/de/ch_cc.xml
+++ b/guide/de/ch_cc.xml
@@ -250,7 +250,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/cc_Reversing_Transaction_1.png"
-                           format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                           srccredit="Mechtilde Stehmann"></imagedata>
             </imageobject>
 
             <textobject>
@@ -272,7 +272,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/cc_Reversing_Transaction_2.png"
-                           format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                           srccredit="Mechtilde Stehmann"></imagedata>
             </imageobject>
 
             <textobject>
@@ -316,7 +316,7 @@
       <screenshot id="cc-accounts">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_accounts.png" format="PNG"
+            <imagedata fileref="figures/cc_accounts.png"
                      srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -353,7 +353,7 @@
       <screenshot id="cc-purchases">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_purchases.png" format="PNG"
+            <imagedata fileref="figures/cc_purchases.png"
                        srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -386,7 +386,7 @@
       <screenshot id="cc-refund">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_refund.png" format="PNG"
+            <imagedata fileref="figures/cc_refund.png"
                        srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -414,7 +414,7 @@
       <screenshot id="cc-interest">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_interest.png" format="PNG"
+            <imagedata fileref="figures/cc_interest.png"
                        srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -449,7 +449,7 @@
       <screenshot id="cc-reconcile-init">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_reconcile_init.png" format="PNG"
+            <imagedata fileref="figures/cc_reconcile_init.png"
                        srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -473,7 +473,7 @@
       <screenshot id="cc-reconcile">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_reconcile.png" format="PNG"
+            <imagedata fileref="figures/cc_reconcile.png"
                        srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -510,7 +510,7 @@
       <screenshot id="cc-payment">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_payment.png" format="PNG"
+            <imagedata fileref="figures/cc_payment.png"
                        srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -532,7 +532,7 @@
       <screenshot id="cc-final">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_final.png" format="PNG"
+            <imagedata fileref="figures/cc_final.png"
                        srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -579,7 +579,7 @@
           <screenshot id="cc-puttoget2-Cash">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cc_CashFlow.png" format="PNG"
+                <imagedata fileref="figures/cc_CashFlow.png"
                            srccredit="Mechtilde Stehmann" />
               </imageobject>
 
@@ -610,7 +610,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cc_TransactionRptVisa.png" 
-                           format="PNG" srccredit="Mechtilde Stehmann" />
+                           srccredit="Mechtilde Stehmann" />
               </imageobject>
 
               <textobject>
@@ -634,7 +634,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cc_TransactionRptExpenses.png" 
-                           format="PNG" srccredit="Mechtilde Stehmann" />
+                           srccredit="Mechtilde Stehmann" />
               </imageobject>
 
               <textobject>
diff --git a/guide/de/ch_currency.xml b/guide/de/ch_currency.xml
index baca8f27..7e823938 100644
--- a/guide/de/ch_currency.xml
+++ b/guide/de/ch_currency.xml
@@ -133,7 +133,7 @@
     <screenshot id="currency_main1">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/currency_main1.png" format="PNG"
+          <imagedata fileref="figures/currency_main1.png"
                      srccredit="Mechtilde Stehmann" />
         </imageobject>
 
@@ -221,7 +221,7 @@
     <screenshot id="currency_main1a">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/currency_main1.png" format="PNG"
+          <imagedata fileref="figures/currency_main1.png"
                      srccredit="Mechtilde Stehmann" />
         </imageobject>
 
@@ -254,7 +254,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_peditor.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -276,7 +276,7 @@
       <screenshot id="currency_addcurr">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/currency_addcurr.png" format="PNG"
+            <imagedata fileref="figures/currency_addcurr.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -302,7 +302,7 @@
       <screenshot id="currency_manualpriceadded">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/currency_BeforeGetOnlineQuotes.png" format="PNG"
+            <imagedata fileref="figures/currency_BeforeGetOnlineQuotes.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -320,7 +320,7 @@
       <screenshot id="currency_main2">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/currency_main2.png" format="PNG"
+            <imagedata fileref="figures/currency_main2.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -357,7 +357,7 @@
       <screenshot id="currency_BeforeGetOnline">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/currency_BeforeGetOnlineQuotes.png" format="PNG"
+            <imagedata fileref="figures/currency_BeforeGetOnlineQuotes.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -388,7 +388,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/currency_AfterGetOnlineQuotes.png"
-                         format="PNG" srccredit="Mechtilde Stehmann" />
+                         srccredit="Mechtilde Stehmann" />
             </imageobject>
 
             <textobject>
@@ -420,7 +420,7 @@
       <screenshot id="currency_main3.png">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/currency_main3.png" format="PNG"
+            <imagedata fileref="figures/currency_main3.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -541,7 +541,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_purchase_MoveMoney.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -563,7 +563,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_purchase_SetExchangeRate.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -586,7 +586,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_purchase_BeforeBoat.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -610,7 +610,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_purchase_AfterBoat.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -662,7 +662,7 @@ Erträge:Investments:Dividende:Boom:0694.HK      (HKD)</screen>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_purchase_BeforeStocks.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -687,7 +687,7 @@ Erträge:Investments:Dividende:Boom:0694.HK      (HKD)</screen>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_purchase_Commodities.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -731,7 +731,7 @@ Aktienkauf
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_purchase_ToAmount.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -753,7 +753,7 @@ Aktienkauf
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_purchase_AfterStocks.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -1175,7 +1175,7 @@ Eigenkapital:Erbschaft        (AUD)</screen>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_PutTogether_AfterMoney.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -1253,7 +1253,7 @@ Eigenkapital:Anfangsbestand                 (AUD) 50.000,- $</screen>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_PutTogether_AussieHouse.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -1420,7 +1420,7 @@ Aufwand:Investments:Devisentransfer                       (AUD)</screen>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_PutTogether_AfterStocks.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
diff --git a/guide/de/ch_dep.xml b/guide/de/ch_dep.xml
index 32611b6e..75e2392b 100644
--- a/guide/de/ch_dep.xml
+++ b/guide/de/ch_dep.xml
@@ -639,7 +639,7 @@
     <screenshot id="dep_example">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/dep_example.png" format="PNG"
+          <imagedata fileref="figures/dep_example.png"
                      srccredit="Thomas Kriegel" />
         </imageobject>
 
@@ -670,7 +670,7 @@
     <screenshot id="dep_assetreg">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/dep_assetreg.png" format="PNG"
+          <imagedata fileref="figures/dep_assetreg.png"
                      srccredit="Thomas Kriegel" />
         </imageobject>
 
@@ -688,7 +688,7 @@
     <screenshot id="dep_assetmain">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/dep_assetmain.png" format="PNG"
+          <imagedata fileref="figures/dep_assetmain.png"
                      srccredit="Thomas Kriegel" />
         </imageobject>
 
diff --git a/guide/de/ch_invest.xml b/guide/de/ch_invest.xml
index e598c93d..3c9b30da 100644
--- a/guide/de/ch_invest.xml
+++ b/guide/de/ch_invest.xml
@@ -348,12 +348,12 @@
       <screenshot id="invest_accountspredef">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_AccountsPredef.png" format="PNG"
+            <imagedata fileref="figures/invest_AccountsPredef.png"
                         srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_AccountsPredef.png" format="PNG"
+            <imagedata fileref="figures/invest_AccountsPredef.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -531,12 +531,12 @@ Einnahmen
       <screenshot id="invest-int">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_int1.png" format="PNG"
+            <imagedata fileref="figures/invest_int1.png"
                         srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_int1.png" format="PNG"
+            <imagedata fileref="figures/invest_int1.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -562,12 +562,12 @@ Einnahmen
       <screenshot id="invest-int2">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_int2.png" format="PNG"
+            <imagedata fileref="figures/invest_int2.png"
                         srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_int2.png" format="PNG"
+            <imagedata fileref="figures/invest_int2.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -585,12 +585,12 @@ Einnahmen
       <screenshot id="invest-int2-1">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_int2-1.png" format="PNG"
+            <imagedata fileref="figures/invest_int2-1.png"
                         srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_int2-1.png" format="PNG"
+            <imagedata fileref="figures/invest_int2-1.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -611,12 +611,12 @@ Einnahmen
       <screenshot id="invest-int3">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_int3.png" format="PNG"
+            <imagedata fileref="figures/invest_int3.png"
                         srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_int3.png" format="PNG"
+            <imagedata fileref="figures/invest_int3.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -716,12 +716,12 @@ Einnahmen
       <screenshot id="invest-newaccount">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_newaccount.png" format="PNG"
+            <imagedata fileref="figures/invest_newaccount.png"
                         srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_newaccount.png" format="PNG"
+            <imagedata fileref="figures/invest_newaccount.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -803,12 +803,12 @@ Einnahmen
               <screenshot id="invest-selectsecurity">
                 <mediaobject>
                   <imageobject role="html">
-                    <imagedata fileref="figures/invest_selectsecurity.png" format="PNG"
+                    <imagedata fileref="figures/invest_selectsecurity.png"
                                 srccredit="Mechtilde Stehmann"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
-                    <imagedata fileref="figures/invest_selectsecurity.png" format="PNG"
+                    <imagedata fileref="figures/invest_selectsecurity.png"
                                 srccredit="Mechtilde Stehmann"></imagedata>
                   </imageobject>
 
@@ -888,12 +888,12 @@ Einnahmen
                     <screenshot id="invest-newsecurity">
                       <mediaobject>
                         <imageobject role="html">
-                          <imagedata fileref="figures/invest_newsecurity.png" format="PNG"
+                          <imagedata fileref="figures/invest_newsecurity.png"
                                      srccredit="Mechtilde Stehmann" width="510px"></imagedata>
                         </imageobject>
 
                         <imageobject role="fo">
-                          <imagedata fileref="figures/invest_newsecurity.png" format="PNG"
+                          <imagedata fileref="figures/invest_newsecurity.png"
                                      srccredit="Mechtilde Stehmann"></imagedata>
                         </imageobject>
 
@@ -980,12 +980,12 @@ Einnahmen
       <screenshot id="invest-setup-current">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_setup_current.png" format="PNG"
+            <imagedata fileref="figures/invest_setup_current.png"
                         srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_setup_current.png" format="PNG"
+            <imagedata fileref="figures/invest_setup_current.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -1028,12 +1028,12 @@ Einnahmen
       <screenshot id="invest-setup-portfolio1">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_setup_portfolio1.png" format="PNG"
+            <imagedata fileref="figures/invest_setup_portfolio1.png"
                         srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_setup_portfolio1.png" format="PNG"
+            <imagedata fileref="figures/invest_setup_portfolio1.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -1084,12 +1084,12 @@ Einnahmen
       <screenshot id="invest-setup-portfolio2">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_SetupPortfolio2.png" format="PNG"
+            <imagedata fileref="figures/invest_SetupPortfolio2.png"
                         srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_SetupPortfolio2.png" format="PNG"
+            <imagedata fileref="figures/invest_SetupPortfolio2.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -1203,12 +1203,12 @@ Einnahmen
       <screenshot id="invest-peditor">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_peditor.png" format="PNG"
+            <imagedata fileref="figures/invest_peditor.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_peditor.png" format="PNG"
+            <imagedata fileref="figures/invest_peditor.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -1252,12 +1252,12 @@ Einnahmen
       <screenshot id="invest-peditor2">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_peditor2.png" format="PNG"
+            <imagedata fileref="figures/invest_peditor2.png"
                         srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_peditor2.png" format="PNG"
+            <imagedata fileref="figures/invest_peditor2.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -1429,12 +1429,12 @@ Einnahmen
       <screenshot id="invest-stockvalue">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_stockvalue.png" format="PNG"
+            <imagedata fileref="figures/invest_stockvalue.png"
                         srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_stockvalue.png" format="PNG"
+            <imagedata fileref="figures/invest_stockvalue.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -1478,7 +1478,7 @@ Einnahmen
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_stockvalue_report_options.png"
-                       format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                       srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <textobject>
@@ -1520,7 +1520,7 @@ Einnahmen
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_stockvalue_report.png"
-                       format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                       srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <textobject>
@@ -1854,12 +1854,12 @@ Einnahmen
       <screenshot id="invest-sellstock">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_sellstock.png" format="PNG"
+            <imagedata fileref="figures/invest_sellstock.png"
                         srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_sellstock.png" format="PNG"
+            <imagedata fileref="figures/invest_sellstock.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -1878,12 +1878,12 @@ Einnahmen
       <screenshot id="invest-sellstock2">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_sellstock2.png" format="PNG"
+            <imagedata fileref="figures/invest_sellstock2.png"
                         srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_sellstock2.png" format="PNG"
+            <imagedata fileref="figures/invest_sellstock2.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -2050,12 +2050,12 @@ Einnahmen
       <screenshot id="invest-sellstockLoss">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_sellstockLoss.png" format="PNG"
+            <imagedata fileref="figures/invest_sellstockLoss.png"
                         srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_sellstockLoss.png" format="PNG"
+            <imagedata fileref="figures/invest_sellstockLoss.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -2074,12 +2074,12 @@ Einnahmen
       <screenshot id="invest-sellstockLoss2">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_sellstockLoss2.png" format="PNG"
+            <imagedata fileref="figures/invest_sellstockLoss2.png"
                         srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_sellstockLoss2.png" format="PNG"
+            <imagedata fileref="figures/invest_sellstockLoss2.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -2181,12 +2181,12 @@ Einnahmen
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png"
-                format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                srccredit="Chris Good" width="510px"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png"
-                           format="PNG" srccredit="Chris Good"></imagedata>
+                           srccredit="Chris Good"></imagedata>
               </imageobject>
 
               <textobject>
@@ -2493,11 +2493,11 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                   <imagedata fileref="figures/investLots0_RegB4Scrub.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
                   <imageobject role="fo">
                     <imagedata fileref="figures/investLots0_RegB4Scrub.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -2536,11 +2536,11 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                   <imagedata fileref="figures/investLots1_BeforeCreateLot.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
                   <imageobject role="fo">
                     <imagedata fileref="figures/investLots1_BeforeCreateLot.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -2607,11 +2607,11 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                   <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
                   <imageobject role="fo">
                     <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -2732,11 +2732,11 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
             <mediaobject>
               <imageobject role="html">
               <imagedata fileref="figures/invest2Lots0RegB4Scrub.png"
-                format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                srccredit="Chris Good" width="510px"></imagedata>
               </imageobject>
               <imageobject role="fo">
                 <imagedata fileref="figures/invest2Lots0RegB4Scrub.png"
-                           format="PNG" srccredit="Chris Good"></imagedata>
+                           srccredit="Chris Good"></imagedata>
               </imageobject>
 
               <textobject>
@@ -2767,11 +2767,11 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                   <imagedata fileref="figures/invest2Lots1B4Scrub.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
                   <imageobject role="fo">
                     <imagedata fileref="figures/invest2Lots1B4Scrub.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -2798,11 +2798,11 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                   <imagedata fileref="figures/invest2Lots2LotsAftScrubAcct.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
                   <imageobject role="fo">
                     <imagedata fileref="figures/invest2Lots2LotsAftScrubAcct.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -2839,11 +2839,11 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                   <imagedata fileref="figures/invest2Lots3RegAftScrubAcct.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
                   <imageobject role="fo">
                     <imagedata fileref="figures/invest2Lots3RegAftScrubAcct.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -2892,11 +2892,11 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
             <mediaobject>
               <imageobject role="html">
               <imagedata fileref="figures/investLotsSplitReg.png"
-                format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                srccredit="Chris Good" width="510px"></imagedata>
               </imageobject>
               <imageobject role="fo">
                 <imagedata fileref="figures/investLotsSplitReg.png"
-                           format="PNG" srccredit="Chris Good"></imagedata>
+                           srccredit="Chris Good"></imagedata>
               </imageobject>
 
               <textobject>
@@ -2918,11 +2918,11 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
             <mediaobject>
               <imageobject role="html">
               <imagedata fileref="figures/investLotsSplitLot0.png"
-                format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                srccredit="Chris Good" width="510px"></imagedata>
               </imageobject>
               <imageobject role="fo">
                 <imagedata fileref="figures/investLotsSplitLot0.png"
-                           format="PNG" srccredit="Chris Good"></imagedata>
+                           srccredit="Chris Good"></imagedata>
               </imageobject>
 
               <textobject>
@@ -2944,11 +2944,11 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
             <mediaobject>
               <imageobject role="html">
               <imagedata fileref="figures/investLotsSplitLot1.png"
-                format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                srccredit="Chris Good" width="510px"></imagedata>
               </imageobject>
               <imageobject role="fo">
                 <imagedata fileref="figures/investLotsSplitLot1.png"
-                           format="PNG" srccredit="Chris Good"></imagedata>
+                           srccredit="Chris Good"></imagedata>
               </imageobject>
 
               <textobject>
@@ -3010,11 +3010,11 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                   <imagedata fileref="figures/investLots4_AfterScrub1LotReg.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
                   <imageobject role="fo">
                     <imagedata fileref="figures/investLots4_AfterScrub1LotReg.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -3080,12 +3080,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject role="html">
             <imagedata fileref="figures/invest_dividendcash.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" width="510px"></imagedata>
+                       srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
             <imagedata fileref="figures/invest_dividendcash.png"
-                       format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                       srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <textobject>
@@ -3133,12 +3133,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
       <screenshot id="invest-dividendreinvest1">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_dividendreinvest1.png" format="PNG"
+            <imagedata fileref="figures/invest_dividendreinvest1.png"
                         srccredit="Mechtilde Stehmann" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_dividendreinvest1.png" format="PNG"
+            <imagedata fileref="figures/invest_dividendreinvest1.png"
                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
@@ -3210,12 +3210,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
     <screenshot id="invest-ret-of-cap">
       <mediaobject>
         <imageobject role="html">
-          <imagedata fileref="figures/invest_ret_of_cap.png" format="PNG"
+          <imagedata fileref="figures/invest_ret_of_cap.png"
                       srccredit="Chris Good" width="510px"></imagedata>
         </imageobject>
 
         <imageobject role="fo">
-          <imagedata fileref="figures/invest_ret_of_cap.png" format="PNG"
+          <imagedata fileref="figures/invest_ret_of_cap.png"
                       srccredit="Chris Good"></imagedata>
         </imageobject>
 
@@ -3278,7 +3278,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_split1.png"
-                       format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                       srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <textobject>
@@ -3301,7 +3301,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_split2.png"
-                       format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                       srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <textobject>
@@ -3365,7 +3365,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_split3.png"
-                       format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                       srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <textobject>
@@ -3388,7 +3388,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_split4.png"
-                       format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                       srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <textobject>
@@ -3413,7 +3413,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_simplesplit1.png"
-                       format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                       srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <textobject>
@@ -3458,7 +3458,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_merge2.png"
-                       format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                       srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <textobject>
@@ -3526,7 +3526,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_merge3.png"
-                       format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                       srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <textobject>
@@ -3554,7 +3554,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_stockmerge1.png"
-                       format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                       srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <textobject>
diff --git a/guide/de/ch_loans.xml b/guide/de/ch_loans.xml
index ef1e080e..27940465 100644
--- a/guide/de/ch_loans.xml
+++ b/guide/de/ch_loans.xml
@@ -169,7 +169,7 @@
     <screenshot id="loans_fcalc">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/loans_fcalc.png" format="PNG"
+          <imagedata fileref="figures/loans_fcalc.png"
                         srccredit="Mechtilde Stehmann" />
         </imageobject>
 
@@ -425,7 +425,7 @@ Der einfache Fall mit PMT == 0 ergibt die Gleichung:
     <screenshot id="loans_mortgage">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/loans_mortgage1.png" format="PNG"
+          <imagedata fileref="figures/loans_mortgage1.png"
                      srccredit="Mechtilde Stehmann" />
         </imageobject>
 
@@ -524,7 +524,7 @@ Der einfache Fall mit PMT == 0 ergibt die Gleichung:
     <screenshot id="loans_mortgage2.png">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/loans_mortgage2.png" format="PNG"
+          <imagedata fileref="figures/loans_mortgage2.png"
                      srccredit="Mechtilde Stehmann" />
         </imageobject>
 
@@ -545,7 +545,7 @@ Der einfache Fall mit PMT == 0 ergibt die Gleichung:
     <screenshot id="loans_mortgage3">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/loans_mortgage3.png" format="PNG"
+          <imagedata fileref="figures/loans_mortgage3.png"
                      srccredit="Mechtilde Stehmann" />
         </imageobject>
 
@@ -636,7 +636,7 @@ Der einfache Fall mit PMT == 0 ergibt die Gleichung:
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanCalculation.png"
-                format="PNG" srccredit="Mechtilde Stehmann" />
+                srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -724,7 +724,7 @@ Vermögen:Anfangskontostand:EUR</screen>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanInitial.png"
-            format="PNG" srccredit="Mechtilde Stehmann" />
+            srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -780,7 +780,7 @@ Vermögen:Anfangskontostand:EUR</screen>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanFirstPayment.png"
-            format="PNG" srccredit="Mechtilde Stehmann" />
+            srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -839,7 +839,7 @@ Vermögen:Anfangskontostand:EUR</screen>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanSecondPayment.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -863,7 +863,7 @@ Vermögen:Anfangskontostand:EUR</screen>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanSecondPaymentAccounts.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
diff --git a/guide/de/ch_oview.xml b/guide/de/ch_oview.xml
index f059ca8a..f5eaed4b 100644
--- a/guide/de/ch_oview.xml
+++ b/guide/de/ch_oview.xml
@@ -49,7 +49,7 @@
     <screenshot id="oview-intro">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/oview_intro.png" format="PNG"
+          <imagedata fileref="figures/oview_intro.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
diff --git a/guide/de/ch_txns.xml b/guide/de/ch_txns.xml
index 4862f1bc..55f3034d 100644
--- a/guide/de/ch_txns.xml
+++ b/guide/de/ch_txns.xml
@@ -138,7 +138,7 @@
       <screenshot id="txns-registersplit4">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_registersplit4.png" format="PNG" srccredit="Mechtilde Stehmann" />
+            <imagedata fileref="figures/txns_registersplit4.png" srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -159,7 +159,7 @@
       <screenshot id="txns-registersplit5">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_registersplit5.png" format="PNG" srccredit="Mechtilde Stehmann" />
+            <imagedata fileref="figures/txns_registersplit5.png" srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -186,7 +186,7 @@
       <screenshot id="txns-registersplit6">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_registersplit6.png" format="PNG"
+            <imagedata fileref="figures/txns_registersplit6.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -462,7 +462,7 @@
     <screenshot id="txns-registersplit2">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/txns_registersplit2.png" format="PNG" srccredit="Mechtilde Stehmann" />
+          <imagedata fileref="figures/txns_registersplit2.png" srccredit="Mechtilde Stehmann" />
         </imageobject>
 
         <textobject>
@@ -508,7 +508,7 @@
     <screenshot id="txns-registersplit3">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/txns_registersplit3.png" format="PNG"
+          <imagedata fileref="figures/txns_registersplit3.png"
                        srccredit="Mechtilde Stehmann" />
         </imageobject>
 
@@ -552,7 +552,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_register_2account.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -584,7 +584,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_register_2account2.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -660,7 +660,7 @@
         <title>Eingabe einer mehrteiligen Buchung</title><mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_register_multiaccount.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -759,12 +759,12 @@
         <mediaobject>
           <imageobject role="html">
             <imagedata fileref="figures/txns_reconcile_window1.png"
-                         format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
             <imagedata fileref="figures/txns_reconcile_window1.png"
-                         format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <textobject>
@@ -903,12 +903,12 @@
         <mediaobject>
           <imageobject role="html">
             <imagedata fileref="figures/txns_reconcile_window2.png"
-                         format="PNG" srccredit="Mechtilde Stehmann" width="510"></imagedata>
+                         srccredit="Mechtilde Stehmann" width="510"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
             <imagedata fileref="figures/txns_reconcile_window2.png"
-                         format="PNG" srccredit="Mechtilde Stehmann"></imagedata>
+                         srccredit="Mechtilde Stehmann"></imagedata>
           </imageobject>
 
           <textobject>
@@ -1005,7 +1005,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_reconcile_window3.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -1052,7 +1052,7 @@
       <screenshot id="txns-sxn-ledger-1">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_sxn_ledger1.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_ledger1.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -1081,7 +1081,7 @@
       <screenshot id="txns-sxn-ledger-2">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_sxn_ledger2.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_ledger2.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -1103,7 +1103,7 @@
       <screenshot id="txns-sxn-ledger-3">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_sxn_ledger3.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_ledger3.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -1127,7 +1127,7 @@
       <screenshot id="txns-sxn-ledger-4">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_sxn_ledger4.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_ledger4.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -1169,12 +1169,12 @@
       <screenshot id="txns-sxn-editor-2">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor-2.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-2.png"
                        srccredit="Mechtilde Stehmann" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor-2.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-2.png"
                        srccredit="Mechtilde Stehmann"/>
           </imageobject>
 
@@ -1197,12 +1197,12 @@
       <screenshot id="txns-sxn-editor-3-overview">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor-3-overview.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-overview.png"
                        srccredit="Mechtilde Stehmann" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor-3-overview.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-overview.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -1293,12 +1293,12 @@
       <screenshot id="txns-sxn-editor-3-frequency">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor-3-frequency.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-frequency.png"
                        srccredit="Mechtilde Stehmann" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor-3-frequency.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-frequency.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -1398,12 +1398,12 @@
       <screenshot id="txns-sxn-editor-3-template">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor-3-template.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-template.png"
                        srccredit="Mechtilde Stehmann" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor-3-template.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-template.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -1432,12 +1432,12 @@
       <screenshot id="txns-sxn-editor-4">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor-4.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-4.png"
                        srccredit="Mechtilde Stehmann" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor-4.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-4.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -1479,12 +1479,12 @@
       <screenshot id="txns-sxn-editor-slr">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor_slr.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor_slr.png"
                        srccredit="Mechtilde Stehmann" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor_slr.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor_slr.png"
                        srccredit="Mechtilde Stehmann" />
           </imageobject>
 
@@ -1551,7 +1551,7 @@
       <screenshot id="txns-puttoget1-Charts">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_puttoget_Charts.png" format="PNG" srccredit="Mechtilde Stehmann" />
+            <imagedata fileref="figures/txns_puttoget_Charts.png" srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -1623,7 +1623,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_puttoget_Charts1.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -1748,7 +1748,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_puttoget_Charts2.png"
-                       format="PNG" srccredit="Mechtilde Stehmann" />
+                       srccredit="Mechtilde Stehmann" />
           </imageobject>
 
           <textobject>
@@ -1801,7 +1801,7 @@
           <screenshot id="txns-puttoget2-Cash">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_CashFlow.png" format="PNG"
+                <imagedata fileref="figures/txns_CashFlow.png"
                            srccredit="Mechtilde Stehmann" />
               </imageobject>
 
@@ -1841,7 +1841,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/txns_TransactionRptChecking.png"
-                           format="PNG" srccredit="Mechtilde Stehmann" />
+                           srccredit="Mechtilde Stehmann" />
               </imageobject>
 
               <textobject>
@@ -1865,7 +1865,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/txns_TransactionRptExpenses.png"
-                           format="PNG" srccredit="Bengt Thuree" />
+                           srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
diff --git a/guide/it/gnucash-guide.xml b/guide/it/gnucash-guide.xml
index 37b2c21b..431680c2 100644
--- a/guide/it/gnucash-guide.xml
+++ b/guide/it/gnucash-guide.xml
@@ -630,11 +630,11 @@
         <screenshot id="oview-intro">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/oview_intro.png" format="PNG" srccredit="Bengt Thuree" width="510"/>
+              <imagedata fileref="figures/oview_intro.png" srccredit="Bengt Thuree" width="510"/>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/oview_intro.png" format="PNG" srccredit="Bengt Thuree"/>
+              <imagedata fileref="figures/oview_intro.png" srccredit="Bengt Thuree"/>
             </imageobject>
 
             <textobject>
@@ -1275,7 +1275,7 @@
             <title>La relazione fondamentale della contabilità</title><screenshot id="basics-AccountRelationships">
               <mediaobject>
                 <imageobject role="html">
-                  <imagedata fileref="figures/basics_AccountRelationships.png" format="PNG" srccredit="Geert Janssens"/>
+                  <imagedata fileref="figures/basics_AccountRelationships.png" srccredit="Geert Janssens"/>
                 </imageobject>
 
                 <imageobject role="fo">
@@ -1479,7 +1479,7 @@
           <screenshot id="basics-TipOfDay">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/basics_TipOfDay.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/basics_TipOfDay.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -1515,7 +1515,7 @@
           <screenshot id="basics-Accounts">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/basics_Accounts.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/basics_Accounts.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -1577,11 +1577,11 @@
           <screenshot id="basics-CheckAccount">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/basics_CheckAccount.png" format="PNG" srccredit="Bengt Thuree" width="510"/>
+                <imagedata fileref="figures/basics_CheckAccount.png" srccredit="Bengt Thuree" width="510"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/basics_CheckAccount.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/basics_CheckAccount.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -1905,11 +1905,11 @@
                       <acronym>sqlite3</acronym></title><screenshot id="basics-SaveXML">
                       <mediaobject>
                         <imageobject role="html">
-                          <imagedata fileref="figures/basics_SaveXML.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                          <imagedata fileref="figures/basics_SaveXML.png" srccredit="Cristian Marchi" width="510px"/>
                         </imageobject>
 
                         <imageobject role="fo">
-                          <imagedata fileref="figures/basics_SaveXML.png" format="PNG" srccredit="Cristian Marchi"/>
+                          <imagedata fileref="figures/basics_SaveXML.png" srccredit="Cristian Marchi"/>
                         </imageobject>
 
                         <textobject>
@@ -1963,11 +1963,11 @@
                       <acronym>postgres</acronym>.</title><screenshot id="basics-SaveSQL">
                       <mediaobject>
                         <imageobject role="html">
-                          <imagedata fileref="figures/basics_SaveSQL.png" format="PNG" srccredit="Marchi Cristian" width="510px"/>
+                          <imagedata fileref="figures/basics_SaveSQL.png" srccredit="Marchi Cristian" width="510px"/>
                         </imageobject>
 
                         <imageobject role="fo">
-                          <imagedata fileref="figures/basics_SaveSQL.png" format="PNG" srccredit="Cristian Marchi"/>
+                          <imagedata fileref="figures/basics_SaveSQL.png" srccredit="Cristian Marchi"/>
                         </imageobject>
 
                         <textobject>
@@ -2505,11 +2505,11 @@
             <screenshot id="basics-NewAccountHierarchySetup">
               <mediaobject>
                 <imageobject role="html">
-                  <imagedata fileref="figures/basics_NewAccountHierarchySetup.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+                  <imagedata fileref="figures/basics_NewAccountHierarchySetup.png" srccredit="Cristian Marchi" width="510"/>
                 </imageobject>
 
                 <imageobject role="fo">
-                  <imagedata fileref="figures/basics_NewAccountHierarchySetup.png" format="PNG" srccredit="Cristian Marchi"/>
+                  <imagedata fileref="figures/basics_NewAccountHierarchySetup.png" srccredit="Cristian Marchi"/>
                 </imageobject>
 
                 <textobject>
@@ -2544,11 +2544,11 @@
             <screenshot id="basics-NewAccountHierarchySetup-currency">
               <mediaobject>
                 <imageobject role="html">
-                  <imagedata fileref="figures/basics_NewAccountHierarchySetup_currency.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+                  <imagedata fileref="figures/basics_NewAccountHierarchySetup_currency.png" srccredit="Cristian Marchi" width="510"/>
                 </imageobject>
 
                 <imageobject role="fo">
-                  <imagedata fileref="figures/basics_NewAccountHierarchySetup_currency.png" format="PNG" srccredit="Cristian Marchi"/>
+                  <imagedata fileref="figures/basics_NewAccountHierarchySetup_currency.png" srccredit="Cristian Marchi"/>
                 </imageobject>
 
                 <textobject>
@@ -2579,11 +2579,11 @@
             <screenshot id="basics-NewBookOptions">
               <mediaobject>
                 <imageobject role="html">
-                  <imagedata fileref="figures/basics_NewBookOpts.png" format="PNG" srccredit="Chris Good" width="510"/>
+                  <imagedata fileref="figures/basics_NewBookOpts.png" srccredit="Chris Good" width="510"/>
                 </imageobject>
 
                 <imageobject role="fo">
-                  <imagedata fileref="figures/basics_NewBookOpts.png" format="PNG" srccredit="Chris Good"/>
+                  <imagedata fileref="figures/basics_NewBookOpts.png" srccredit="Chris Good"/>
                 </imageobject>
 
                 <textobject>
@@ -2614,11 +2614,11 @@
             <screenshot id="basics-NewAccountHierarchySetup-Accounts">
               <mediaobject>
                 <imageobject role="html">
-                  <imagedata fileref="figures/basics_NewAccountHierarchySetup_Accounts.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+                  <imagedata fileref="figures/basics_NewAccountHierarchySetup_Accounts.png" srccredit="Cristian Marchi" width="510"/>
                 </imageobject>
 
                 <imageobject role="fo">
-                  <imagedata fileref="figures/basics_NewAccountHierarchySetup_Accounts.png" format="PNG" srccredit="Cristian Marchi"/>
+                  <imagedata fileref="figures/basics_NewAccountHierarchySetup_Accounts.png" srccredit="Cristian Marchi"/>
                 </imageobject>
 
                 <textobject>
@@ -2646,11 +2646,11 @@
             <screenshot id="basics-NewAccountHierarchySetup-Setup.png">
               <mediaobject>
                 <imageobject role="html">
-                  <imagedata fileref="figures/basics_NewAccountHierarchySetup_Setup.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+                  <imagedata fileref="figures/basics_NewAccountHierarchySetup_Setup.png" srccredit="Cristian Marchi" width="510"/>
                 </imageobject>
 
                 <imageobject role="fo">
-                  <imagedata fileref="figures/basics_NewAccountHierarchySetup_Setup.png" format="PNG" srccredit="Cristian Marchi"/>
+                  <imagedata fileref="figures/basics_NewAccountHierarchySetup_Setup.png" srccredit="Cristian Marchi"/>
                 </imageobject>
 
                 <textobject>
@@ -2675,11 +2675,11 @@
             <screenshot id="basics-NewAccountHierarchySetup-Finish">
               <mediaobject>
                 <imageobject role="html">
-                  <imagedata fileref="figures/basics_NewAccountHierarchySetup_Finish.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+                  <imagedata fileref="figures/basics_NewAccountHierarchySetup_Finish.png" srccredit="Cristian Marchi" width="510"/>
                 </imageobject>
 
                 <imageobject role="fo">
-                  <imagedata fileref="figures/basics_NewAccountHierarchySetup_Finish.png" format="PNG" srccredit="Cristian Marchi"/>
+                  <imagedata fileref="figures/basics_NewAccountHierarchySetup_Finish.png" srccredit="Cristian Marchi"/>
                 </imageobject>
 
                 <textobject>
@@ -2711,11 +2711,11 @@
             <screenshot id="basics-EmptyAccounts">
               <mediaobject>
                 <imageobject role="html">
-                  <imagedata fileref="figures/basics_EmptyAccounts.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+                  <imagedata fileref="figures/basics_EmptyAccounts.png" srccredit="Cristian Marchi" width="510"/>
                 </imageobject>
 
                 <imageobject role="fo">
-                  <imagedata fileref="figures/basics_EmptyAccounts.png" format="PNG" srccredit="Cristian Marchi"/>
+                  <imagedata fileref="figures/basics_EmptyAccounts.png" srccredit="Cristian Marchi"/>
                 </imageobject>
 
                 <textobject>
@@ -2774,7 +2774,7 @@ Translators:
         <screenshot id="accts-AccountRelationships">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/basics_AccountRelationships.png" format="PNG" srccredit="Geert Janssens"/>
+              <imagedata fileref="figures/basics_AccountRelationships.png" srccredit="Geert Janssens"/>
             </imageobject>
 
             <imageobject role="fo">
@@ -3115,7 +3115,7 @@ Translators:
           <screenshot id="accts-DefaultIncomeAccounts">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/accts_DefaultIncomeAccounts.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/accts_DefaultIncomeAccounts.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -3132,7 +3132,7 @@ Translators:
           <screenshot id="accts-DefaultExpenseAccounts">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/accts_DefaultExpenseAccounts.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/accts_DefaultExpenseAccounts.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -3232,7 +3232,7 @@ Translators:
               <screenshot id="accts-CreateAssetsAccounts">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/accts_CreateAssetsAccount.png" format="PNG" srccredit="Cristian Marchi"/>
+                    <imagedata fileref="figures/accts_CreateAssetsAccount.png" srccredit="Cristian Marchi"/>
                   </imageobject>
 
                   <textobject>
@@ -3279,7 +3279,7 @@ Translators:
           <screenshot id="accts-toplevel">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/accts_toplevel.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/accts_toplevel.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -3411,7 +3411,7 @@ Translators:
           <screenshot id="accts-tree">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/accts_tree.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/accts_tree.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -3575,7 +3575,7 @@ Translators:
           <screenshot id="txns-registersplit4">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_registersplit4.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/txns_registersplit4.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -3595,7 +3595,7 @@ Translators:
           <screenshot id="txns-registersplit5">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_registersplit5.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/txns_registersplit5.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -3622,7 +3622,7 @@ Translators:
           <screenshot id="txns-registersplit6">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_registersplit6.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/txns_registersplit6.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -3899,7 +3899,7 @@ Translators:
         <screenshot id="txns-registersplit2">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/txns_registersplit2.png" format="PNG" srccredit="Bengt Thuree"/>
+              <imagedata fileref="figures/txns_registersplit2.png" srccredit="Bengt Thuree"/>
             </imageobject>
 
             <textobject>
@@ -3944,7 +3944,7 @@ Translators:
         <screenshot id="txns-registersplit3">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/txns_registersplit3.png" format="PNG" srccredit="Bengt Thuree"/>
+              <imagedata fileref="figures/txns_registersplit3.png" srccredit="Bengt Thuree"/>
             </imageobject>
 
             <textobject>
@@ -3984,7 +3984,7 @@ Translators:
           <screenshot id="txns-register-2account">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_register_2account.png" format="PNG" srccredit="Bengt  Thuree"/>
+                <imagedata fileref="figures/txns_register_2account.png" srccredit="Bengt  Thuree"/>
               </imageobject>
 
               <textobject>
@@ -4014,7 +4014,7 @@ Translators:
           <screenshot id="txns-register-2account2">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_register_2account2.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/txns_register_2account2.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -4088,7 +4088,7 @@ Translators:
           <figure id="txns-register-multiaccount">
             <title>Inserire una transazione suddivisa</title><mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_register_multiaccount.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/txns_register_multiaccount.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -4181,11 +4181,11 @@ Translators:
           <screenshot id="txns-reconcile-window-1">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/txns_reconcile_window1.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/txns_reconcile_window1.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/txns_reconcile_window1.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/txns_reconcile_window1.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -4325,11 +4325,11 @@ Translators:
           <screenshot id="txns-reconcile-window-2">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/txns_reconcile_window2.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+                <imagedata fileref="figures/txns_reconcile_window2.png" srccredit="Cristian Marchi" width="510"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/txns_reconcile_window2.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/txns_reconcile_window2.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -4447,7 +4447,7 @@ Translators:
           <screenshot id="txns-reconcile-window-3">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_reconcile_window3.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/txns_reconcile_window3.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -4494,7 +4494,7 @@ Translators:
           <screenshot id="txns-sxn-ledger-1">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_sxn_ledger1.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/txns_sxn_ledger1.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -4520,7 +4520,7 @@ Translators:
           <screenshot id="txns-sxn-ledger-2">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_sxn_ledger2.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/txns_sxn_ledger2.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -4540,7 +4540,7 @@ Translators:
           <screenshot id="txns-sxn-ledger-3">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_sxn_ledger3.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/txns_sxn_ledger3.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -4562,7 +4562,7 @@ Translators:
           <screenshot id="txns-sxn-ledger-4">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_sxn_ledger4.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/txns_sxn_ledger4.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -4604,11 +4604,11 @@ Translators:
           <screenshot id="txns-sxn-editor-2">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/txns_sxn_editor-2.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+                <imagedata fileref="figures/txns_sxn_editor-2.png" srccredit="Cristian Marchi" width="510"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/txns_sxn_editor-2.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/txns_sxn_editor-2.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -4630,11 +4630,11 @@ Translators:
           <screenshot id="txns-sxn-editor-3-overview">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/txns_sxn_editor-3-overview.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+                <imagedata fileref="figures/txns_sxn_editor-3-overview.png" srccredit="Cristian Marchi" width="510"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/txns_sxn_editor-3-overview.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/txns_sxn_editor-3-overview.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -4719,11 +4719,11 @@ Translators:
           <screenshot id="txns-sxn-editor-3-frequency">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/txns_sxn_editor-3-frequency.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+                <imagedata fileref="figures/txns_sxn_editor-3-frequency.png" srccredit="Cristian Marchi" width="510"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/txns_sxn_editor-3-frequency.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/txns_sxn_editor-3-frequency.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -4817,11 +4817,11 @@ Translators:
           <screenshot id="txns-sxn-editor-3-template">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/txns_sxn_editor-3-template.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+                <imagedata fileref="figures/txns_sxn_editor-3-template.png" srccredit="Cristian Marchi" width="510"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/txns_sxn_editor-3-template.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/txns_sxn_editor-3-template.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -4849,11 +4849,11 @@ Translators:
           <screenshot id="txns-sxn-editor-4">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/txns_sxn_editor-4.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+                <imagedata fileref="figures/txns_sxn_editor-4.png" srccredit="Cristian Marchi" width="510"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/txns_sxn_editor-4.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/txns_sxn_editor-4.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -4896,11 +4896,11 @@ Translators:
           <screenshot id="txns-sxn-editor-slr">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/txns_sxn_editor_slr.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+                <imagedata fileref="figures/txns_sxn_editor_slr.png" srccredit="Cristian Marchi" width="510"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/txns_sxn_editor_slr.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/txns_sxn_editor_slr.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -4967,7 +4967,7 @@ Translators:
           <screenshot id="txns-puttoget1-Charts">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_puttoget_Charts.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/txns_puttoget_Charts.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -5041,7 +5041,7 @@ Translators:
           <screenshot id="txns-puttoget1-Charts1">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_puttoget_Charts1.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/txns_puttoget_Charts1.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -5168,7 +5168,7 @@ Translators:
           <screenshot id="txns-puttoget2-Charts1">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_puttoget_Charts2.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/txns_puttoget_Charts2.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -5224,7 +5224,7 @@ Translators:
               <screenshot id="txns-puttoget2-Cash">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/txns_CashFlow.png" format="PNG" srccredit="Bengt Thuree"/>
+                    <imagedata fileref="figures/txns_CashFlow.png" srccredit="Bengt Thuree"/>
                   </imageobject>
 
                   <textobject>
@@ -5258,7 +5258,7 @@ Translators:
               <screenshot id="txns-puttoget2-TransactionRptChecking">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/txns_TransactionRptChecking.png" format="PNG" srccredit="Bengt Thuree"/>
+                    <imagedata fileref="figures/txns_TransactionRptChecking.png" srccredit="Bengt Thuree"/>
                   </imageobject>
 
                   <textobject>
@@ -5281,7 +5281,7 @@ Translators:
               <screenshot id="txns-puttoget2-TransactionRptExpenses">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/txns_TransactionRptExpenses.png" format="PNG" srccredit="Bengt Thuree"/>
+                    <imagedata fileref="figures/txns_TransactionRptExpenses.png" srccredit="Bengt Thuree"/>
                   </imageobject>
 
                   <textobject>
@@ -5533,7 +5533,7 @@ Translators:
           <screenshot id="cbook-gcashdata4">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_gcashdata4.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/cbook_gcashdata4.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -5566,7 +5566,7 @@ Translators:
               <screenshot id="cbook-transferin">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/cbook_transferin.png" format="PNG" srccredit="Bengt Thuree"/>
+                    <imagedata fileref="figures/cbook_transferin.png" srccredit="Bengt Thuree"/>
                   </imageobject>
 
                   <textobject>
@@ -5596,7 +5596,7 @@ Translators:
               <screenshot id="cbook-checkexamp">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/cbook_checkexamp.png" format="PNG" srccredit="Bengt Thuree"/>
+                    <imagedata fileref="figures/cbook_checkexamp.png" srccredit="Bengt Thuree"/>
                   </imageobject>
 
                   <textobject>
@@ -5623,7 +5623,7 @@ Translators:
               <screenshot id="cbook-atm">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/cbook_atm.png" format="PNG" srccredit="Bengt Thuree"/>
+                    <imagedata fileref="figures/cbook_atm.png" srccredit="Bengt Thuree"/>
                   </imageobject>
 
                   <textobject>
@@ -5650,7 +5650,7 @@ Translators:
           <screenshot id="cbook-bankstmt">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_bankstmt.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/cbook_bankstmt.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -5679,7 +5679,7 @@ Translators:
               <screenshot id="cbook-reconexamp">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/cbook_reconexamp.png" format="PNG" srccredit="Bengt Thuree"/>
+                    <imagedata fileref="figures/cbook_reconexamp.png" srccredit="Bengt Thuree"/>
                   </imageobject>
 
                   <textobject>
@@ -5713,7 +5713,7 @@ Translators:
               <screenshot id="cbook-servch">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/cbook_servch.png" format="PNG" srccredit="Bengt Thuree"/>
+                    <imagedata fileref="figures/cbook_servch.png" srccredit="Bengt Thuree"/>
                   </imageobject>
 
                   <textobject>
@@ -5743,7 +5743,7 @@ Translators:
               <screenshot id="cbook-reconciledCheckAct">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/cbook_reconciledCheckAct.png" format="PNG" srccredit="Bengt Thuree"/>
+                    <imagedata fileref="figures/cbook_reconciledCheckAct.png" srccredit="Bengt Thuree"/>
                   </imageobject>
 
                   <textobject>
@@ -5771,7 +5771,7 @@ Translators:
           <screenshot id="cbook-chartaccts5">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_chartaccts5.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/cbook_chartaccts5.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -5810,7 +5810,7 @@ Translators:
               <screenshot id="cbook-puttoget2-Cash">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/cbook_CashFlow.png" format="PNG" srccredit="Bengt Thuree"/>
+                    <imagedata fileref="figures/cbook_CashFlow.png" srccredit="Bengt Thuree"/>
                   </imageobject>
 
                   <textobject>
@@ -5839,7 +5839,7 @@ Translators:
               <screenshot id="cbook-puttoget2-TransactionRptChecking">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/cbook_TransactionRptAssets.png" format="PNG" srccredit="Bengt Thuree"/>
+                    <imagedata fileref="figures/cbook_TransactionRptAssets.png" srccredit="Bengt Thuree"/>
                   </imageobject>
 
                   <textobject>
@@ -5863,7 +5863,7 @@ Translators:
               <screenshot id="cbook-puttoget2-TransactionRptExpenses">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/cbook_TransactionRptExpenses.png" format="PNG" srccredit="Bengt Thuree"/>
+                    <imagedata fileref="figures/cbook_TransactionRptExpenses.png" srccredit="Bengt Thuree"/>
                   </imageobject>
 
                   <textobject>
@@ -6261,7 +6261,7 @@ Translators:
             <screenshot id="cc-Reversing-Transaction-1">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/cc_Reversing_Transaction_1.png" format="PNG" srccredit="Bengt  Thuree"/>
+                  <imagedata fileref="figures/cc_Reversing_Transaction_1.png" srccredit="Bengt  Thuree"/>
                 </imageobject>
 
                 <textobject>
@@ -6282,7 +6282,7 @@ Translators:
             <screenshot id="cc-Reversing-Transaction-2">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/cc_Reversing_Transaction_2.png" format="PNG" srccredit="Bengt  Thuree"/>
+                  <imagedata fileref="figures/cc_Reversing_Transaction_2.png" srccredit="Bengt  Thuree"/>
                 </imageobject>
 
                 <textobject>
@@ -6327,7 +6327,7 @@ Translators:
           <screenshot id="cc-accounts">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cc_accounts.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/cc_accounts.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -6362,7 +6362,7 @@ Translators:
           <screenshot id="cc-purchases">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cc_purchases.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/cc_purchases.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -6393,7 +6393,7 @@ Translators:
           <screenshot id="cc-refund">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cc_refund.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/cc_refund.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -6420,7 +6420,7 @@ Translators:
           <screenshot id="cc-interest">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cc_interest.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/cc_interest.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -6455,7 +6455,7 @@ Translators:
           <screenshot id="cc-reconcile-init">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cc_reconcile_init.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/cc_reconcile_init.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -6478,7 +6478,7 @@ Translators:
           <screenshot id="cc-reconcile">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cc_reconcile.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/cc_reconcile.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -6515,7 +6515,7 @@ Translators:
           <screenshot id="cc-payment">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cc_payment.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/cc_payment.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -6536,7 +6536,7 @@ Translators:
           <screenshot id="cc-final">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cc_final.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/cc_final.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -6582,7 +6582,7 @@ Translators:
               <screenshot id="cc-puttoget2-Cash">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/cc_CashFlow.png" format="PNG" srccredit="Bengt Thuree"/>
+                    <imagedata fileref="figures/cc_CashFlow.png" srccredit="Bengt Thuree"/>
                   </imageobject>
 
                   <textobject>
@@ -6611,7 +6611,7 @@ Translators:
               <screenshot id="cc-puttoget2-TransactionRptVisa">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/cc_TransactionRptVisa.png" format="PNG" srccredit="Bengt Thuree"/>
+                    <imagedata fileref="figures/cc_TransactionRptVisa.png" srccredit="Bengt Thuree"/>
                   </imageobject>
 
                   <textobject>
@@ -6634,7 +6634,7 @@ Translators:
               <screenshot id="cc-puttoget2-TransactionRptExpenses">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/cc_TransactionRptExpenses.png" format="PNG" srccredit="Bengt Thuree"/>
+                    <imagedata fileref="figures/cc_TransactionRptExpenses.png" srccredit="Bengt Thuree"/>
                   </imageobject>
 
                   <textobject>
@@ -6826,7 +6826,7 @@ Struttura di conti elementare per un prestito
         <screenshot id="loans_fcalc">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/loans_fcalc.png" format="PNG" srccredit="Bengt Thuree"/>
+              <imagedata fileref="figures/loans_fcalc.png" srccredit="Bengt Thuree"/>
             </imageobject>
 
             <textobject>
@@ -7087,7 +7087,7 @@ The simple case for when  PMT == 0 gives the solution:
         <screenshot id="loans_mortgage">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/loans_mortgage1.png" format="PNG" srccredit="Bengt Thuree"/>
+              <imagedata fileref="figures/loans_mortgage1.png" srccredit="Bengt Thuree"/>
             </imageobject>
 
             <textobject>
@@ -7185,7 +7185,7 @@ The simple case for when  PMT == 0 gives the solution:
         <screenshot id="loans_mortgage2.png">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/loans_mortgage2.png" format="PNG" srccredit="Bengt Thuree"/>
+              <imagedata fileref="figures/loans_mortgage2.png" srccredit="Bengt Thuree"/>
             </imageobject>
 
             <textobject>
@@ -7205,7 +7205,7 @@ The simple case for when  PMT == 0 gives the solution:
         <screenshot id="loans_mortgage3">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/loans_mortgage3.png" format="PNG" srccredit="Bengt Thuree"/>
+              <imagedata fileref="figures/loans_mortgage3.png" srccredit="Bengt Thuree"/>
             </imageobject>
 
             <textobject>
@@ -7295,7 +7295,7 @@ The simple case for when  PMT == 0 gives the solution:
           <screenshot id="loans_OpenOfficePrivateLoanDetails">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/loans_PrivateLoanCalculation.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/loans_PrivateLoanCalculation.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -7382,7 +7382,7 @@ Capitale:Bilanci di apertura:EUR
           <screenshot id="loans_PrivateLoanInitial">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/loans_PrivateLoanInitial.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/loans_PrivateLoanInitial.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -7437,7 +7437,7 @@ Capitale:Bilanci di apertura:EUR
           <screenshot id="loans_PrivateLoanFirstPayment">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/loans_PrivateLoanFirstPayment.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/loans_PrivateLoanFirstPayment.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -7495,7 +7495,7 @@ Capitale:Bilanci di apertura:EUR
           <screenshot id="loans_PrivateLoanSecondPayment">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/loans_PrivateLoanSecondPayment.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/loans_PrivateLoanSecondPayment.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -7518,7 +7518,7 @@ Capitale:Bilanci di apertura:EUR
           <screenshot id="loans_PrivateLoanSecondPaymentAccounts">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/loans_PrivateLoanSecondPaymentAccounts.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/loans_PrivateLoanSecondPaymentAccounts.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -8327,11 +8327,11 @@ Capitale:Bilanci di apertura:EUR
           <screenshot id="invest_accountspredef">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_AccountsPredef.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/invest_AccountsPredef.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_AccountsPredef.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_AccountsPredef.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -8512,11 +8512,11 @@ Entrate
           <screenshot id="invest-int">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_int1.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/invest_int1.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_int1.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_int1.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -8542,11 +8542,11 @@ Entrate
           <screenshot id="invest-int2">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_int2.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/invest_int2.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_int2.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_int2.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -8563,11 +8563,11 @@ Entrate
           <screenshot id="invest-int2-1">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_int2-1.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/invest_int2-1.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_int2-1.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_int2-1.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -8587,11 +8587,11 @@ Entrate
           <screenshot id="invest-int3">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_int3.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/invest_int3.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_int3.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_int3.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -8694,11 +8694,11 @@ Entrate
           <screenshot id="invest-newaccount">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_newaccount.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/invest_newaccount.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_newaccount.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_newaccount.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -8779,11 +8779,11 @@ Entrate
                   <screenshot id="invest-selectsecurity">
                     <mediaobject>
                       <imageobject role="html">
-                        <imagedata fileref="figures/invest_selectsecurity.png" format="PNG" srccredit="Cristian Marchi"/>
+                        <imagedata fileref="figures/invest_selectsecurity.png" srccredit="Cristian Marchi"/>
                       </imageobject>
 
                       <imageobject role="fo">
-                        <imagedata fileref="figures/invest_selectsecurity.png" format="PNG" srccredit="Cristian Marchi"/>
+                        <imagedata fileref="figures/invest_selectsecurity.png" srccredit="Cristian Marchi"/>
                       </imageobject>
 
                       <textobject>
@@ -8862,11 +8862,11 @@ Entrate
                         <screenshot id="invest-newsecurity">
                           <mediaobject>
                             <imageobject role="html">
-                              <imagedata fileref="figures/invest_newsecurity.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                              <imagedata fileref="figures/invest_newsecurity.png" srccredit="Cristian Marchi" width="510px"/>
                             </imageobject>
 
                             <imageobject role="fo">
-                              <imagedata fileref="figures/invest_newsecurity.png" format="PNG" srccredit="Cristian Marchi"/>
+                              <imagedata fileref="figures/invest_newsecurity.png" srccredit="Cristian Marchi"/>
                             </imageobject>
 
                             <textobject>
@@ -8953,11 +8953,11 @@ Entrate
           <screenshot id="invest-setup-current">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_setup_current.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/invest_setup_current.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_setup_current.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_setup_current.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -9000,11 +9000,11 @@ Entrate
           <screenshot id="invest-setup-portfolio1">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_setup_portfolio1.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/invest_setup_portfolio1.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_setup_portfolio1.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_setup_portfolio1.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -9055,11 +9055,11 @@ Entrate
           <screenshot id="invest-setup-portfolio2">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_SetupPortfolio2.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/invest_SetupPortfolio2.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_SetupPortfolio2.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_SetupPortfolio2.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -9171,11 +9171,11 @@ Entrate
           <screenshot id="invest-peditor">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_peditor.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_peditor.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_peditor.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_peditor.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -9218,11 +9218,11 @@ Entrate
           <screenshot id="invest-peditor2">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_peditor2.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/invest_peditor2.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_peditor2.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_peditor2.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -9399,11 +9399,11 @@ Entrate
           <screenshot id="invest-stockvalue">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_stockvalue.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/invest_stockvalue.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_stockvalue.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_stockvalue.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -9446,7 +9446,7 @@ Entrate
           <screenshot id="invest-stockvalue-report-options">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/invest_stockvalue_report_options.png" format="PNG" srccredit="Dave Herman"/>
+                <imagedata fileref="figures/invest_stockvalue_report_options.png" srccredit="Dave Herman"/>
               </imageobject>
 
               <textobject>
@@ -9489,7 +9489,7 @@ Entrate
           <screenshot id="invest-stockvalue-report">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/invest_stockvalue_report.png" format="PNG" srccredit="Dave Herman"/>
+                <imagedata fileref="figures/invest_stockvalue_report.png" srccredit="Dave Herman"/>
               </imageobject>
 
               <textobject>
@@ -9821,11 +9821,11 @@ Entrate
           <screenshot id="invest-sellstock">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_sellstock.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/invest_sellstock.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_sellstock.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_sellstock.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -9843,11 +9843,11 @@ Entrate
           <screenshot id="invest-sellstock2">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_sellstock2.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/invest_sellstock2.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_sellstock2.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_sellstock2.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -10013,11 +10013,11 @@ Entrate
           <screenshot id="invest-sellstockLoss">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_sellstockLoss.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/invest_sellstockLoss.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_sellstockLoss.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_sellstockLoss.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -10035,11 +10035,11 @@ Entrate
           <screenshot id="invest-sellstockLoss2">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_sellstockLoss2.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/invest_sellstockLoss2.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_sellstockLoss2.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_sellstockLoss2.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -10133,11 +10133,11 @@ Entrate
               <title>Selling Shares - Capital Gains - Lots in Account window</title><screenshot id="tool-lotsInAcct">
                 <mediaobject>
                   <imageobject role="html">
-                    <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png" format="PNG" srccredit="Chris Good" width="510px"/>
+                    <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png" srccredit="Chris Good" width="510px"/>
                   </imageobject>
 
                   <imageobject role="fo">
-                    <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png" format="PNG" srccredit="Chris Good"/>
+                    <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png" srccredit="Chris Good"/>
                   </imageobject>
 
                   <textobject>
@@ -10504,11 +10504,11 @@ Entrate
                   <title>Selling Shares - Capital Gains - Security register before scrubbing a single lot</title><screenshot id="invest-lots0reg">
                     <mediaobject>
                       <imageobject role="html">
-                        <imagedata fileref="figures/investLots0_RegB4Scrub.png" format="PNG" srccredit="Chris Good" width="510px"/>
+                        <imagedata fileref="figures/investLots0_RegB4Scrub.png" srccredit="Chris Good" width="510px"/>
                       </imageobject>
 
                       <imageobject role="fo">
-                        <imagedata fileref="figures/investLots0_RegB4Scrub.png" format="PNG" srccredit="Chris Good"/>
+                        <imagedata fileref="figures/investLots0_RegB4Scrub.png" srccredit="Chris Good"/>
                       </imageobject>
 
                       <textobject>
@@ -10544,11 +10544,11 @@ Entrate
                   <title>Selling Shares - Capital Gains - Lots before scrubbing a single lot</title><screenshot id="invest-lots1B4CreateLot">
                     <mediaobject>
                       <imageobject role="html">
-                        <imagedata fileref="figures/investLots1_BeforeCreateLot.png" format="PNG" srccredit="Chris Good" width="510px"/>
+                        <imagedata fileref="figures/investLots1_BeforeCreateLot.png" srccredit="Chris Good" width="510px"/>
                       </imageobject>
 
                       <imageobject role="fo">
-                        <imagedata fileref="figures/investLots1_BeforeCreateLot.png" format="PNG" srccredit="Chris Good"/>
+                        <imagedata fileref="figures/investLots1_BeforeCreateLot.png" srccredit="Chris Good"/>
                       </imageobject>
 
                       <textobject>
@@ -10614,11 +10614,11 @@ Entrate
                   <title>Selling Shares - Capital Gains - Lots before scrubbing a single lot, after manual linking</title><screenshot id="invest-lots2B4Scrub1Lot">
                     <mediaobject>
                       <imageobject role="html">
-                        <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png" format="PNG" srccredit="Chris Good" width="510px"/>
+                        <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png" srccredit="Chris Good" width="510px"/>
                       </imageobject>
 
                       <imageobject role="fo">
-                        <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png" format="PNG" srccredit="Chris Good"/>
+                        <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png" srccredit="Chris Good"/>
                       </imageobject>
 
                       <textobject>
@@ -10738,11 +10738,11 @@ Entrate
               <title>Selling Shares - Capital Gains - Register before Scrub Account</title><screenshot id="invest2-lots0reg">
                 <mediaobject>
                   <imageobject role="html">
-                    <imagedata fileref="figures/invest2Lots0RegB4Scrub.png" format="PNG" srccredit="Chris Good" width="510px"/>
+                    <imagedata fileref="figures/invest2Lots0RegB4Scrub.png" srccredit="Chris Good" width="510px"/>
                   </imageobject>
 
                   <imageobject role="fo">
-                    <imagedata fileref="figures/invest2Lots0RegB4Scrub.png" format="PNG" srccredit="Chris Good"/>
+                    <imagedata fileref="figures/invest2Lots0RegB4Scrub.png" srccredit="Chris Good"/>
                   </imageobject>
 
                   <textobject>
@@ -10771,11 +10771,11 @@ Entrate
                   <title>Selling Shares - Capital Gains - Lots before Scrub Account</title><screenshot id="invest2-lots1B4ScrubAcct">
                     <mediaobject>
                       <imageobject role="html">
-                        <imagedata fileref="figures/invest2Lots1B4Scrub.png" format="PNG" srccredit="Chris Good" width="510px"/>
+                        <imagedata fileref="figures/invest2Lots1B4Scrub.png" srccredit="Chris Good" width="510px"/>
                       </imageobject>
 
                       <imageobject role="fo">
-                        <imagedata fileref="figures/invest2Lots1B4Scrub.png" format="PNG" srccredit="Chris Good"/>
+                        <imagedata fileref="figures/invest2Lots1B4Scrub.png" srccredit="Chris Good"/>
                       </imageobject>
 
                       <textobject>
@@ -10800,11 +10800,11 @@ Entrate
                   <title>Selling Shares - Capital Gains - Lots after Scrub Account</title><screenshot id="invest2-lots2AftScrubAcct">
                     <mediaobject>
                       <imageobject role="html">
-                        <imagedata fileref="figures/invest2Lots2LotsAftScrubAcct.png" format="PNG" srccredit="Chris Good" width="510px"/>
+                        <imagedata fileref="figures/invest2Lots2LotsAftScrubAcct.png" srccredit="Chris Good" width="510px"/>
                       </imageobject>
 
                       <imageobject role="fo">
-                        <imagedata fileref="figures/invest2Lots2LotsAftScrubAcct.png" format="PNG" srccredit="Chris Good"/>
+                        <imagedata fileref="figures/invest2Lots2LotsAftScrubAcct.png" srccredit="Chris Good"/>
                       </imageobject>
 
                       <textobject>
@@ -10837,11 +10837,11 @@ Entrate
                   <title>Selling Shares - Capital Gains - Register after Scrub Account</title><screenshot id="invest2-lots3AftScrubAcct">
                     <mediaobject>
                       <imageobject role="html">
-                        <imagedata fileref="figures/invest2Lots3RegAftScrubAcct.png" format="PNG" srccredit="Chris Good" width="510px"/>
+                        <imagedata fileref="figures/invest2Lots3RegAftScrubAcct.png" srccredit="Chris Good" width="510px"/>
                       </imageobject>
 
                       <imageobject role="fo">
-                        <imagedata fileref="figures/invest2Lots3RegAftScrubAcct.png" format="PNG" srccredit="Chris Good"/>
+                        <imagedata fileref="figures/invest2Lots3RegAftScrubAcct.png" srccredit="Chris Good"/>
                       </imageobject>
 
                       <textobject>
@@ -10885,11 +10885,11 @@ Entrate
               <title>Selling Shares - Capital Gains - Register after Scrub Account</title><screenshot id="investLotsSplitReg">
                 <mediaobject>
                   <imageobject role="html">
-                    <imagedata fileref="figures/investLotsSplitReg.png" format="PNG" srccredit="Chris Good" width="510px"/>
+                    <imagedata fileref="figures/investLotsSplitReg.png" srccredit="Chris Good" width="510px"/>
                   </imageobject>
 
                   <imageobject role="fo">
-                    <imagedata fileref="figures/investLotsSplitReg.png" format="PNG" srccredit="Chris Good"/>
+                    <imagedata fileref="figures/investLotsSplitReg.png" srccredit="Chris Good"/>
                   </imageobject>
 
                   <textobject>
@@ -10908,11 +10908,11 @@ Entrate
               <title>Selling Shares - Capital Gains - Lot 0 after Scrub Account</title><screenshot id="investLotsSplitLot0">
                 <mediaobject>
                   <imageobject role="html">
-                    <imagedata fileref="figures/investLotsSplitLot0.png" format="PNG" srccredit="Chris Good" width="510px"/>
+                    <imagedata fileref="figures/investLotsSplitLot0.png" srccredit="Chris Good" width="510px"/>
                   </imageobject>
 
                   <imageobject role="fo">
-                    <imagedata fileref="figures/investLotsSplitLot0.png" format="PNG" srccredit="Chris Good"/>
+                    <imagedata fileref="figures/investLotsSplitLot0.png" srccredit="Chris Good"/>
                   </imageobject>
 
                   <textobject>
@@ -10931,11 +10931,11 @@ Entrate
               <title>Selling Shares - Capital Gains - Lot 1 after Scrub Account</title><screenshot id="investLotsSplitLot1">
                 <mediaobject>
                   <imageobject role="html">
-                    <imagedata fileref="figures/investLotsSplitLot1.png" format="PNG" srccredit="Chris Good" width="510px"/>
+                    <imagedata fileref="figures/investLotsSplitLot1.png" srccredit="Chris Good" width="510px"/>
                   </imageobject>
 
                   <imageobject role="fo">
-                    <imagedata fileref="figures/investLotsSplitLot1.png" format="PNG" srccredit="Chris Good"/>
+                    <imagedata fileref="figures/investLotsSplitLot1.png" srccredit="Chris Good"/>
                   </imageobject>
 
                   <textobject>
@@ -10992,11 +10992,11 @@ Entrate
                   <title>Selling Shares - Capital Gains - Register after scrubbing a single lot</title><screenshot id="invest-lots4AftScrub1LotReg">
                     <mediaobject>
                       <imageobject role="html">
-                        <imagedata fileref="figures/investLots4_AfterScrub1LotReg.png" format="PNG" srccredit="Chris Good" width="510px"/>
+                        <imagedata fileref="figures/investLots4_AfterScrub1LotReg.png" srccredit="Chris Good" width="510px"/>
                       </imageobject>
 
                       <imageobject role="fo">
-                        <imagedata fileref="figures/investLots4_AfterScrub1LotReg.png" format="PNG" srccredit="Chris Good"/>
+                        <imagedata fileref="figures/investLots4_AfterScrub1LotReg.png" srccredit="Chris Good"/>
                       </imageobject>
 
                       <textobject>
@@ -11057,11 +11057,11 @@ Entrate
           <screenshot id="invest-dividendcash1">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_dividendcash.png" format="PNG" srccredit="Daniel Dodson" width="510px"/>
+                <imagedata fileref="figures/invest_dividendcash.png" srccredit="Daniel Dodson" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_dividendcash.png" format="PNG" srccredit="Daniel Dodson"/>
+                <imagedata fileref="figures/invest_dividendcash.png" srccredit="Daniel Dodson"/>
               </imageobject>
 
               <textobject>
@@ -11109,11 +11109,11 @@ Entrate
           <screenshot id="invest-dividendreinvest1">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/invest_dividendreinvest1.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/invest_dividendreinvest1.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/invest_dividendreinvest1.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/invest_dividendreinvest1.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -11183,11 +11183,11 @@ Entrate
         <screenshot id="invest-ret-of-cap">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/invest_ret_of_cap.png" format="PNG" srccredit="Chris Good" width="510px"/>
+              <imagedata fileref="figures/invest_ret_of_cap.png" srccredit="Chris Good" width="510px"/>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/invest_ret_of_cap.png" format="PNG" srccredit="Chris Good"/>
+              <imagedata fileref="figures/invest_ret_of_cap.png" srccredit="Chris Good"/>
             </imageobject>
 
             <textobject>
@@ -11247,7 +11247,7 @@ Entrate
           <screenshot id="invest-split1">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/invest_split1.png" format="PNG" srccredit="Dave Herman"/>
+                <imagedata fileref="figures/invest_split1.png" srccredit="Dave Herman"/>
               </imageobject>
 
               <textobject>
@@ -11271,7 +11271,7 @@ Entrate
           <screenshot id="invest-split2">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/invest_split2.png" format="PNG" srccredit="Dave Herman"/>
+                <imagedata fileref="figures/invest_split2.png" srccredit="Dave Herman"/>
               </imageobject>
 
               <textobject>
@@ -11334,7 +11334,7 @@ Entrate
           <screenshot id="invest-split3">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/invest_split3.png" format="PNG" srccredit="Dave Herman"/>
+                <imagedata fileref="figures/invest_split3.png" srccredit="Dave Herman"/>
               </imageobject>
 
               <textobject>
@@ -11357,7 +11357,7 @@ Entrate
           <screenshot id="invest-split4">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/invest_split4.png" format="PNG" srccredit="Dave Herman"/>
+                <imagedata fileref="figures/invest_split4.png" srccredit="Dave Herman"/>
               </imageobject>
 
               <textobject>
@@ -11381,7 +11381,7 @@ Entrate
           <screenshot id="invest-simplesplit1">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/invest_simplesplit1.png" format="PNG" srccredit="Dave Herman"/>
+                <imagedata fileref="figures/invest_simplesplit1.png" srccredit="Dave Herman"/>
               </imageobject>
 
               <textobject>
@@ -11429,7 +11429,7 @@ Entrate
           <screenshot id="invest-merge2">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/invest_merge2.png" format="PNG" srccredit="Dave Herman"/>
+                <imagedata fileref="figures/invest_merge2.png" srccredit="Dave Herman"/>
               </imageobject>
 
               <textobject>
@@ -11496,7 +11496,7 @@ Entrate
           <screenshot id="invest-merge3">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/invest_merge3.png" format="PNG" srccredit="Dave Herman"/>
+                <imagedata fileref="figures/invest_merge3.png" srccredit="Dave Herman"/>
               </imageobject>
 
               <textobject>
@@ -11525,7 +11525,7 @@ Entrate
           <screenshot id="invest-stockmerge1">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/invest_stockmerge1.png" format="PNG" srccredit="Dave Herman"/>
+                <imagedata fileref="figures/invest_stockmerge1.png" srccredit="Dave Herman"/>
               </imageobject>
 
               <textobject>
@@ -12662,7 +12662,7 @@ Entrate
         <screenshot id="capgain_appmain">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/capgain_appmain.png" format="PNG" srccredit="Bengt Thuree"/>
+              <imagedata fileref="figures/capgain_appmain.png" srccredit="Bengt Thuree"/>
             </imageobject>
 
             <textobject>
@@ -12691,7 +12691,7 @@ Entrate
           <screenshot id="capgain_app2main">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/capgain_app2main.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/capgain_app2main.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -12833,7 +12833,7 @@ Entrate
               <screenshot id="capgain_app3main">
                 <mediaobject>
                   <imageobject>
-                    <imagedata fileref="figures/capgain_app3main.png" format="PNG" srccredit="Bengt Thuree"/>
+                    <imagedata fileref="figures/capgain_app3main.png" srccredit="Bengt Thuree"/>
                   </imageobject>
 
                   <textobject>
@@ -13241,7 +13241,7 @@ Entrate
         <screenshot id="currency_main1">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/currency_main1.png" format="PNG" srccredit="Geert Janssens"/>
+              <imagedata fileref="figures/currency_main1.png" srccredit="Geert Janssens"/>
             </imageobject>
 
             <textobject>
@@ -13325,7 +13325,7 @@ Entrate
         <screenshot id="currency_main1a">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/currency_main1.png" format="PNG" srccredit="Geert Janssens"/>
+              <imagedata fileref="figures/currency_main1.png" srccredit="Geert Janssens"/>
             </imageobject>
 
             <textobject>
@@ -13356,7 +13356,7 @@ Entrate
           <screenshot id="currency_peditor">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/currency_peditor.png" format="PNG" srccredit="Geert Janssens"/>
+                <imagedata fileref="figures/currency_peditor.png" srccredit="Geert Janssens"/>
               </imageobject>
 
               <textobject>
@@ -13377,7 +13377,7 @@ Entrate
           <screenshot id="currency_addcurr">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/currency_addcurr.png" format="PNG" srccredit="Geert Janssens"/>
+                <imagedata fileref="figures/currency_addcurr.png" srccredit="Geert Janssens"/>
               </imageobject>
 
               <textobject>
@@ -13401,7 +13401,7 @@ Entrate
           <screenshot id="currency_manualpriceadded">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/currency_BeforeGetOnlineQuotes.png" format="PNG" srccredit="Geert Janssens"/>
+                <imagedata fileref="figures/currency_BeforeGetOnlineQuotes.png" srccredit="Geert Janssens"/>
               </imageobject>
 
               <textobject>
@@ -13418,7 +13418,7 @@ Entrate
           <screenshot id="currency_main2">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/currency_main2.png" format="PNG" srccredit="Geert Janssens"/>
+                <imagedata fileref="figures/currency_main2.png" srccredit="Geert Janssens"/>
               </imageobject>
 
               <textobject>
@@ -13454,7 +13454,7 @@ Entrate
           <screenshot id="currency_BeforeGetOnline">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/currency_BeforeGetOnlineQuotes.png" format="PNG" srccredit="Geert Janssens"/>
+                <imagedata fileref="figures/currency_BeforeGetOnlineQuotes.png" srccredit="Geert Janssens"/>
               </imageobject>
 
               <textobject>
@@ -13483,7 +13483,7 @@ Entrate
           <para><screenshot id="currency_AfterGetOnlineQuotes">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/currency_AfterGetOnlineQuotes.png" format="PNG" srccredit="Geert Janssens"/>
+                  <imagedata fileref="figures/currency_AfterGetOnlineQuotes.png" srccredit="Geert Janssens"/>
                 </imageobject>
 
                 <textobject>
@@ -13512,7 +13512,7 @@ Entrate
           <screenshot id="currency_main3.png">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/currency_main3.png" format="PNG" srccredit="Geert Janssens"/>
+                <imagedata fileref="figures/currency_main3.png" srccredit="Geert Janssens"/>
               </imageobject>
 
               <textobject>
@@ -13626,7 +13626,7 @@ Entrate
           <screenshot id="currency_purchase_MoveMoney.png">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/currency_purchase_MoveMoney.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/currency_purchase_MoveMoney.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -13647,7 +13647,7 @@ Entrate
           <screenshot id="currency_purchase_SetExchangeRate.png">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/currency_purchase_SetExchangeRate.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/currency_purchase_SetExchangeRate.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -13669,7 +13669,7 @@ Entrate
           <screenshot id="currency_purchase_BeforeBoat.png">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/currency_purchase_BeforeBoat.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/currency_purchase_BeforeBoat.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -13692,7 +13692,7 @@ Entrate
           <screenshot id="currency_purchase_AfterBoat.png">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/currency_purchase_AfterBoat.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/currency_purchase_AfterBoat.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -13743,7 +13743,7 @@ Income:Investments:Dividend:Boom:0694.HK (HKD)
           <screenshot id="currency_purchase_BeforeStocks.png">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/currency_purchase_BeforeStocks.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/currency_purchase_BeforeStocks.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -13767,7 +13767,7 @@ Income:Investments:Dividend:Boom:0694.HK (HKD)
           <screenshot id="currency_purchase_Commodities.png">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/currency_purchase_Commodities.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/currency_purchase_Commodities.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -13864,7 +13864,7 @@ Income:Investments:Dividend:Boom:0694.HK (HKD)
           <screenshot id="currency_purchase_ToAmount.png">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/currency_purchase_ToAmount.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/currency_purchase_ToAmount.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -13885,7 +13885,7 @@ Income:Investments:Dividend:Boom:0694.HK (HKD)
           <screenshot id="currency_purchase_AfterStocks.png">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/currency_purchase_AfterStocks.png" format="PNG" srccredit="Bengt Thuree"/>
+                <imagedata fileref="figures/currency_purchase_AfterStocks.png" srccredit="Bengt Thuree"/>
               </imageobject>
 
               <textobject>
@@ -14346,12 +14346,12 @@ Basic A/R and A/P Account Hierarchy:
             <title>Sales Tax Tables Editor</title><screenshot id="bus-taxmain">
               <mediaobject>
                 <imageobject role="html">
-                  <imagedata fileref="figures/bus_tax_main.png" format="PNG"
+                  <imagedata fileref="figures/bus_tax_main.png"
                          srccredit="Chris Good" width="510px" />
                 </imageobject>
 
                 <imageobject role="fo">
-                  <imagedata fileref="figures/bus_tax_main.png" format="PNG"
+                  <imagedata fileref="figures/bus_tax_main.png"
                         srccredit="Chris Good" />
                 </imageobject>
 
@@ -14366,7 +14366,7 @@ Basic A/R and A/P Account Hierarchy:
             <title>New Sales Tax Table Entry</title><screenshot id="bus-taxnew">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/bus_tax_new.png" format="PNG"
+                  <imagedata fileref="figures/bus_tax_new.png"
                          srccredit="Chris Good" />
                 </imageobject>
 
@@ -14712,7 +14712,7 @@ Basic A/R and A/P Account Hierarchy:
             <title>Entering Company Information</title><screenshot id="bus-co-reg">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/bus_co_reg.png" format="PNG"
+                  <imagedata fileref="figures/bus_co_reg.png"
                         srccredit="Chris Good" />
                 </imageobject>
 
@@ -14810,7 +14810,7 @@ Basic A/R and A/P Account Hierarchy:
             <title>Billing Terms Editor</title><screenshot id="bus-termsmain">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/bus_terms_main.png" format="PNG"
+                  <imagedata fileref="figures/bus_terms_main.png"
                         srccredit="Chris Good" />
                 </imageobject>
 
@@ -14825,7 +14825,7 @@ Basic A/R and A/P Account Hierarchy:
             <title>New Billing Term</title><screenshot id="bus-termsnew">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/bus_terms_new.png" format="PNG"
+                  <imagedata fileref="figures/bus_terms_new.png"
                          srccredit="Chris Good" />
                 </imageobject>
 
@@ -14989,7 +14989,7 @@ Basic A/R and A/P Account Hierarchy:
             <screenshot id="bus-ar-custnew">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/bus_ar_custnew.png" format="PNG" srccredit="Patrick Schweiger"/>
+                  <imagedata fileref="figures/bus_ar_custnew.png" srccredit="Patrick Schweiger"/>
                 </imageobject>
 
                 <textobject>
@@ -15021,7 +15021,7 @@ Basic A/R and A/P Account Hierarchy:
             <screenshot id="bus-ar-custfind">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/bus_ar_custfind.png" format="PNG" srccredit="Patrick Schweiger"/>
+                  <imagedata fileref="figures/bus_ar_custfind.png" srccredit="Patrick Schweiger"/>
                 </imageobject>
 
                 <textobject>
@@ -15097,7 +15097,7 @@ Basic A/R and A/P Account Hierarchy:
             <screenshot id="bus-ar-invoicenew">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/bus_ar_invoicenew.png" format="PNG" srccredit="Patrick Schweiger"/>
+                  <imagedata fileref="figures/bus_ar_invoicenew.png" srccredit="Patrick Schweiger"/>
                 </imageobject>
 
                 <textobject>
@@ -15127,7 +15127,7 @@ Basic A/R and A/P Account Hierarchy:
             <screenshot id="bus-ar-invoiceedit">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/bus_ar_invoiceedit.png" format="PNG" srccredit="Patrick Schweiger"/>
+                  <imagedata fileref="figures/bus_ar_invoiceedit.png" srccredit="Patrick Schweiger"/>
                 </imageobject>
 
                 <textobject>
@@ -15159,7 +15159,7 @@ Basic A/R and A/P Account Hierarchy:
             <screenshot id="bus-ar-invoicepost">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/bus_ar_invoicepost.png" format="PNG" srccredit="Patrick Schweiger"/>
+                  <imagedata fileref="figures/bus_ar_invoicepost.png" srccredit="Patrick Schweiger"/>
                 </imageobject>
 
                 <textobject>
@@ -15227,7 +15227,7 @@ Basic A/R and A/P Account Hierarchy:
             <screenshot id="bus-ar-invoiceprint">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/bus_ar_invoiceprint.png" format="PNG" srccredit="Patrick Schweiger"/>
+                  <imagedata fileref="figures/bus_ar_invoiceprint.png" srccredit="Patrick Schweiger"/>
                 </imageobject>
 
                 <textobject>
@@ -15322,7 +15322,7 @@ Basic A/R and A/P Account Hierarchy:
           <screenshot id="bus-ar-jobnew">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ar_jobnew.png" format="PNG" srccredit="Patrick Schweiger"/>
+                <imagedata fileref="figures/bus_ar_jobnew.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -15380,7 +15380,7 @@ Basic A/R and A/P Account Hierarchy:
           <screenshot id="bus-ar-payment">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ar_payment.png" format="PNG" srccredit="Patrick Schweiger"/>
+                <imagedata fileref="figures/bus_ar_payment.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -15426,7 +15426,7 @@ Basic A/R and A/P Account Hierarchy:
           <screenshot id="bus-ar-invoicechange1">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ar_invoicechange1.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/bus_ar_invoicechange1.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -15469,11 +15469,11 @@ Basic A/R and A/P Account Hierarchy:
           <screenshot id="bus-ar-invoicechange2">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/bus_ar_invoicechange2.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+                <imagedata fileref="figures/bus_ar_invoicechange2.png" srccredit="Cristian Marchi" width="510"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/bus_ar_invoicechange2.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/bus_ar_invoicechange2.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -15508,7 +15508,7 @@ Basic A/R and A/P Account Hierarchy:
           <screenshot id="bus-ar-invoicechange3">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ar_invoicechange3.png" format="PNG" srccredit="Patrick Schweiger"/>
+                <imagedata fileref="figures/bus_ar_invoicechange3.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -15610,7 +15610,7 @@ Basic A/R and A/P Account Hierarchy:
             <screenshot id="bus-ap-vendornew">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/bus_ap_vendornew.png" srccredit="Patrick Schweiger" format="PNG"/>
+                  <imagedata fileref="figures/bus_ap_vendornew.png" srccredit="Patrick Schweiger"/>
                 </imageobject>
 
                 <textobject>
@@ -15641,7 +15641,7 @@ Basic A/R and A/P Account Hierarchy:
             <screenshot id="bus-ar-vendorfind">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/bus_ap_vendorfind.png" srccredit="Patrick Schweiger" format="PNG"/>
+                  <imagedata fileref="figures/bus_ap_vendorfind.png" srccredit="Patrick Schweiger"/>
                 </imageobject>
 
                 <textobject>
@@ -15719,7 +15719,7 @@ Basic A/R and A/P Account Hierarchy:
             <screenshot id="bus-ap-billnew">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/bus_ap_billnew.png" srccredit="Patrick Schweiger" format="PNG"/>
+                  <imagedata fileref="figures/bus_ap_billnew.png" srccredit="Patrick Schweiger"/>
                 </imageobject>
 
                 <textobject>
@@ -15749,7 +15749,7 @@ Basic A/R and A/P Account Hierarchy:
             <screenshot id="bus-ap-billedit">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/bus_ap_billedit.png" srccredit="Patrick Schweiger" format="PNG"/>
+                  <imagedata fileref="figures/bus_ap_billedit.png" srccredit="Patrick Schweiger"/>
                 </imageobject>
 
                 <textobject>
@@ -15783,7 +15783,7 @@ Basic A/R and A/P Account Hierarchy:
             <screenshot id="bus-ap-billpost">
               <mediaobject>
                 <imageobject>
-                  <imagedata fileref="figures/bus_ap_billpost.png" srccredit="Patrick Schweiger" format="PNG"/>
+                  <imagedata fileref="figures/bus_ap_billpost.png" srccredit="Patrick Schweiger"/>
                 </imageobject>
 
                 <textobject>
@@ -15843,7 +15843,7 @@ Basic A/R and A/P Account Hierarchy:
           <screenshot id="bus-ap-jobnew">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ap_jobnew.png" srccredit="Jon Lapham" format="PNG"/>
+                <imagedata fileref="figures/bus_ap_jobnew.png" srccredit="Jon Lapham"/>
               </imageobject>
 
               <textobject>
@@ -15896,7 +15896,7 @@ Basic A/R and A/P Account Hierarchy:
           <screenshot id="bus-ap-payment">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ap_payment.png" srccredit="Patrick Schweiger" format="PNG"/>
+                <imagedata fileref="figures/bus_ap_payment.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -16286,7 +16286,7 @@ Basic A/R and A/P Account Hierarchy:
           <screenshot id="bus-pay-ex1">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_pay_ex1.png" srccredit="Patrick Schweiger" format="PNG"/>
+                <imagedata fileref="figures/bus_pay_ex1.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -16462,7 +16462,7 @@ Basic A/R and A/P Account Hierarchy:
           <screenshot id="bus-pay-ex2">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_pay_ex2.png" srccredit="Patrick Schweiger" format="PNG"/>
+                <imagedata fileref="figures/bus_pay_ex2.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -16493,7 +16493,7 @@ Basic A/R and A/P Account Hierarchy:
           <screenshot id="bus-pay-ex3">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_pay_ex3.png" srccredit="Patrick Schweiger" format="PNG"/>
+                <imagedata fileref="figures/bus_pay_ex3.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -16517,7 +16517,7 @@ Basic A/R and A/P Account Hierarchy:
           <screenshot id="bus-pay-ex4">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_pay_ex4.png" srccredit="Patrick Schweiger" format="PNG"/>
+                <imagedata fileref="figures/bus_pay_ex4.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -17892,7 +17892,7 @@ Translators:
         <screenshot id="dep_example">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/dep_example.png" format="PNG" srccredit="Bengt Thuree"/>
+              <imagedata fileref="figures/dep_example.png" srccredit="Bengt Thuree"/>
             </imageobject>
 
             <textobject>
@@ -17926,7 +17926,7 @@ Translators:
         <screenshot id="dep_assetreg">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/dep_assetreg.png" format="PNG" srccredit="Bengt Thuree"/>
+              <imagedata fileref="figures/dep_assetreg.png" srccredit="Bengt Thuree"/>
             </imageobject>
 
             <textobject>
@@ -17943,7 +17943,7 @@ Translators:
         <screenshot id="dep_assetmain">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/dep_assetmain.png" format="PNG" srccredit="Bengt Thuree"/>
+              <imagedata fileref="figures/dep_assetmain.png" srccredit="Bengt Thuree"/>
             </imageobject>
 
             <textobject>
diff --git a/guide/ja/ch_accts.xml b/guide/ja/ch_accts.xml
index 917b7f7d..66eaed4b 100644
--- a/guide/ja/ch_accts.xml
+++ b/guide/ja/ch_accts.xml
@@ -41,7 +41,7 @@ Translators:
       <mediaobject>
         <imageobject>
           <imagedata fileref="figures/basics_AccountRelationships.png"
-format="PNG" srccredit="Geert Janssens"></imagedata>
+srccredit="Geert Janssens"></imagedata>
         </imageobject>
 
         <textobject>
@@ -290,7 +290,7 @@ linkend="basics-accounting1"></xref>で説明しているように、貸方は
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/accts_DefaultIncomeAccounts.png"
-format="PNG" srccredit="Cristian Marchi"></imagedata>
+srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
           <textobject>
@@ -308,7 +308,7 @@ format="PNG" srccredit="Cristian Marchi"></imagedata>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/accts_DefaultExpenseAccounts.png"
-format="PNG" srccredit="Cristian Marchi"></imagedata>
+srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
           <textobject>
@@ -389,7 +389,7 @@ format="PNG" srccredit="Cristian Marchi"></imagedata>
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/accts_CreateAssetsAccount.png"
-format="PNG" srccredit="Cristian Marchi"></imagedata>
+srccredit="Cristian Marchi"></imagedata>
               </imageobject>
 
               <textobject>
@@ -431,7 +431,7 @@ format="PNG" srccredit="Cristian Marchi"></imagedata>
       <screenshot id="accts-toplevel">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/accts_toplevel.png" format="PNG"
+            <imagedata fileref="figures/accts_toplevel.png"
 srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -540,7 +540,7 @@ srccredit="Cristian Marchi"></imagedata>
       <screenshot id="accts-tree">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/accts_tree.png" format="PNG"
+            <imagedata fileref="figures/accts_tree.png"
 srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
diff --git a/guide/ja/ch_basics.xml b/guide/ja/ch_basics.xml
index 08ad5bdd..83a8896b 100644
--- a/guide/ja/ch_basics.xml
+++ b/guide/ja/ch_basics.xml
@@ -102,7 +102,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/basics_AccountRelationships.png"
-format="PNG" srccredit="Geert Janssens"></imagedata>
+srccredit="Geert Janssens"></imagedata>
             </imageobject>
 
             <textobject>
@@ -250,7 +250,7 @@ linkend="basics-files1"/>を参照してください。
       <screenshot id="basics-TipOfDay">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/basics_TipOfDay.png" format="PNG"
+            <imagedata fileref="figures/basics_TipOfDay.png"
 srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -283,7 +283,7 @@ srccredit="Cristian Marchi"></imagedata>
       <screenshot id="basics-Accounts">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/basics_Accounts.png" format="PNG"
+            <imagedata fileref="figures/basics_Accounts.png"
 srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -337,12 +337,12 @@ srccredit="Cristian Marchi"></imagedata>
         <mediaobject>
           <imageobject role="html">
             <imagedata
-fileref="figures/basics_CheckAccount.png" format="PNG" srccredit="Bengt
+fileref="figures/basics_CheckAccount.png" srccredit="Bengt
 Thuree" width="510"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/basics_CheckAccount.png" format="PNG"
+            <imagedata fileref="figures/basics_CheckAccount.png"
 srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -587,12 +587,12 @@ linkend="basics-open-data">開いて</link>修正するために、ファイル
                   <mediaobject>
                     <imageobject role="html">
                       <imagedata fileref="figures/basics_SaveXML.png"
-format="PNG" srccredit="Cristian Marchi" width="510px"></imagedata>
+srccredit="Cristian Marchi" width="510px"></imagedata>
                     </imageobject>
 
                     <imageobject role="fo">
                       <imagedata
-fileref="figures/basics_SaveXML.png" format="PNG" srccredit="Cristian
+fileref="figures/basics_SaveXML.png" srccredit="Cristian
 Marchi"></imagedata>
                     </imageobject>
 
@@ -639,12 +639,12 @@ Marchi"></imagedata>
                   <mediaobject>
                     <imageobject role="html">
                       <imagedata fileref="figures/basics_SaveSQL.png"
-format="PNG" srccredit="Marchi Cristian" width="510px"></imagedata>
+srccredit="Marchi Cristian" width="510px"></imagedata>
                     </imageobject>
 
                     <imageobject role="fo">
                       <imagedata
-fileref="figures/basics_SaveSQL.png" format="PNG" srccredit="Cristian
+fileref="figures/basics_SaveSQL.png" srccredit="Cristian
 Marchi"></imagedata>
                     </imageobject>
 
@@ -896,13 +896,13 @@ Marchi"></imagedata>
           <mediaobject>
             <imageobject role="html">
               <imagedata
-fileref="figures/basics_NewAccountHierarchySetup.png" format="PNG"
+fileref="figures/basics_NewAccountHierarchySetup.png"
 srccredit="Cristian Marchi" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata
-fileref="figures/basics_NewAccountHierarchySetup.png" format="PNG"
+fileref="figures/basics_NewAccountHierarchySetup.png"
 srccredit="Cristian Marchi"></imagedata>
             </imageobject>
 
@@ -935,13 +935,13 @@ srccredit="Cristian Marchi"></imagedata>
           <mediaobject>
             <imageobject role="html">
               <imagedata
-fileref="figures/basics_NewAccountHierarchySetup_currency.png" format="PNG"
+fileref="figures/basics_NewAccountHierarchySetup_currency.png"
 srccredit="Cristian Marchi" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata
-fileref="figures/basics_NewAccountHierarchySetup_currency.png" format="PNG"
+fileref="figures/basics_NewAccountHierarchySetup_currency.png"
 srccredit="Cristian Marchi"></imagedata>
             </imageobject>
 
@@ -973,13 +973,13 @@ srccredit="Cristian Marchi"></imagedata>
           <mediaobject>
             <imageobject role="html">
               <imagedata
-fileref="figures/basics_NewAccountHierarchySetup_Accounts.png" format="PNG"
+fileref="figures/basics_NewAccountHierarchySetup_Accounts.png"
 srccredit="Cristian Marchi" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata
-fileref="figures/basics_NewAccountHierarchySetup_Accounts.png" format="PNG"
+fileref="figures/basics_NewAccountHierarchySetup_Accounts.png"
 srccredit="Cristian Marchi"></imagedata>
             </imageobject>
 
@@ -1005,13 +1005,13 @@ srccredit="Cristian Marchi"></imagedata>
           <mediaobject>
             <imageobject role="html">
               <imagedata
-fileref="figures/basics_NewAccountHierarchySetup_Setup.png" format="PNG"
+fileref="figures/basics_NewAccountHierarchySetup_Setup.png"
 srccredit="Cristian Marchi" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata
-fileref="figures/basics_NewAccountHierarchySetup_Setup.png" format="PNG"
+fileref="figures/basics_NewAccountHierarchySetup_Setup.png"
 srccredit="Cristian Marchi"></imagedata>
             </imageobject>
 
@@ -1036,13 +1036,13 @@ srccredit="Cristian Marchi"></imagedata>
           <mediaobject>
             <imageobject role="html">
               <imagedata
-fileref="figures/basics_NewAccountHierarchySetup_Finish.png" format="PNG"
+fileref="figures/basics_NewAccountHierarchySetup_Finish.png"
 srccredit="Cristian Marchi" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata
-fileref="figures/basics_NewAccountHierarchySetup_Finish.png" format="PNG"
+fileref="figures/basics_NewAccountHierarchySetup_Finish.png"
 srccredit="Cristian Marchi"></imagedata>
             </imageobject>
 
@@ -1067,12 +1067,12 @@ srccredit="Cristian Marchi"></imagedata>
           <mediaobject>
             <imageobject role="html">
               <imagedata
-fileref="figures/basics_EmptyAccounts.png" format="PNG" srccredit="Cristian
+fileref="figures/basics_EmptyAccounts.png" srccredit="Cristian
 Marchi" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/basics_EmptyAccounts.png" format="PNG"
+              <imagedata fileref="figures/basics_EmptyAccounts.png"
 srccredit="Cristian Marchi"></imagedata>
             </imageobject>
 
diff --git a/guide/ja/ch_bus_ap.xml b/guide/ja/ch_bus_ap.xml
index b6f98999..a7a5f8cc 100644
--- a/guide/ja/ch_bus_ap.xml
+++ b/guide/ja/ch_bus_ap.xml
@@ -248,7 +248,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_ap_vendornew.png"
-srccredit="Patrick Schweiger" format="PNG"/>
+srccredit="Patrick Schweiger"/>
           </imageobject>
 
           <textobject>
@@ -279,7 +279,7 @@ srccredit="Patrick Schweiger" format="PNG"/>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_ap_vendorfind.png"
-srccredit="Patrick Schweiger" format="PNG"/>
+srccredit="Patrick Schweiger"/>
           </imageobject>
 
           <textobject>
@@ -400,7 +400,7 @@ linkend="bus-ap-jobs1" />を参照)
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_ap_billnew.png"
-srccredit="Patrick Schweiger" format="PNG"/>
+srccredit="Patrick Schweiger"/>
           </imageobject>
 
           <textobject>
@@ -428,7 +428,7 @@ srccredit="Patrick Schweiger" format="PNG"/>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_ap_billedit.png"
-srccredit="Patrick Schweiger" format="PNG"/>
+srccredit="Patrick Schweiger"/>
           </imageobject>
 
           <textobject>
@@ -537,7 +537,7 @@ srccredit="Patrick Schweiger" format="PNG"/>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_ap_billpost.png"
-srccredit="Patrick Schweiger" format="PNG"/>
+srccredit="Patrick Schweiger"/>
           </imageobject>
 
           <textobject>
@@ -694,7 +694,7 @@ srccredit="Patrick Schweiger" format="PNG"/>
       <mediaobject>
         <imageobject>
           <imagedata fileref="figures/bus_ap_jobnew.png" srccredit="Jon
-Lapham" format="PNG"/>
+Lapham"/>
         </imageobject>
 
         <textobject>
@@ -803,7 +803,7 @@ linkend="bus-ap-billfind2" />で説明した<guilabel>仕入先を検索</guilab
       <mediaobject>
         <imageobject>
           <imagedata fileref="figures/bus_ap_payment.png"
-srccredit="Patrick Schweiger" format="PNG"/>
+srccredit="Patrick Schweiger"/>
         </imageobject>
 
         <textobject>
diff --git a/guide/ja/ch_bus_ar.xml b/guide/ja/ch_bus_ar.xml
index f4a1de18..0aed0433 100644
--- a/guide/ja/ch_bus_ar.xml
+++ b/guide/ja/ch_bus_ar.xml
@@ -298,7 +298,7 @@
       <screenshot id="bus-ar-custnew">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/bus_ar_custnew.png" format="PNG"
+            <imagedata fileref="figures/bus_ar_custnew.png"
 srccredit="Patrick Schweiger" />
           </imageobject>
 
@@ -330,7 +330,7 @@ srccredit="Patrick Schweiger" />
       <screenshot id="bus-ar-custfind">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/bus_ar_custfind.png" format="PNG"
+            <imagedata fileref="figures/bus_ar_custfind.png"
 srccredit="Patrick Schweiger" />
           </imageobject>
 
@@ -442,7 +442,7 @@ linkend="bus-ar-jobs1" />を参照)
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_ar_invoicenew.png"
-format="PNG" srccredit="Patrick Schweiger" />
+srccredit="Patrick Schweiger" />
           </imageobject>
 
           <textobject>
@@ -470,7 +470,7 @@ format="PNG" srccredit="Patrick Schweiger" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_ar_invoiceedit.png"
-format="PNG" srccredit="Patrick Schweiger" />
+srccredit="Patrick Schweiger" />
           </imageobject>
 
           <textobject>
@@ -652,7 +652,7 @@ format="PNG" srccredit="Patrick Schweiger" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_ar_invoicepost.png"
-format="PNG" srccredit="Patrick Schweiger" />
+srccredit="Patrick Schweiger" />
           </imageobject>
 
           <textobject>
@@ -786,7 +786,7 @@ linkend="bus-ar-invoicenew2"/>を参照してください)。
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_ar_invoiceprint.png"
-format="PNG" srccredit="Patrick Schweiger" />
+srccredit="Patrick Schweiger" />
           </imageobject>
 
           <textobject>
@@ -943,7 +943,7 @@ linkend="bus-ar-custfind2" />で説明した<guilabel>得意先を検索</guilab
     <screenshot id="bus-ar-jobnew">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/bus_ar_jobnew.png" format="PNG"
+          <imagedata fileref="figures/bus_ar_jobnew.png"
 srccredit="Patrick Schweiger" />
         </imageobject>
 
@@ -1054,7 +1054,7 @@ linkend="bus-ar-invoicefind2"
     <screenshot id="bus-ar-payment">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/bus_ar_payment.png" format="PNG"
+          <imagedata fileref="figures/bus_ar_payment.png"
 srccredit="Patrick Schweiger" />
         </imageobject>
 
@@ -1099,7 +1099,7 @@ srccredit="Patrick Schweiger" />
       <mediaobject>
         <imageobject>
           <imagedata fileref="figures/bus_ar_invoicechange1.png"
-format="PNG" srccredit="Cristian Marchi" />
+srccredit="Cristian Marchi" />
         </imageobject>
 
         <textobject>
@@ -1140,13 +1140,13 @@ format="PNG" srccredit="Cristian Marchi" />
       <mediaobject>
         <imageobject role="html">
           <imagedata
-fileref="figures/bus_ar_invoicechange2.png" format="PNG" srccredit="Cristian
+fileref="figures/bus_ar_invoicechange2.png" srccredit="Cristian
 Marchi" width="510"/>
         </imageobject>
 
         <imageobject role="fo">
           <imagedata
-fileref="figures/bus_ar_invoicechange2.png" format="PNG" srccredit="Cristian
+fileref="figures/bus_ar_invoicechange2.png" srccredit="Cristian
 Marchi"/>
         </imageobject>
 
@@ -1177,7 +1177,7 @@ Marchi"/>
       <mediaobject>
         <imageobject>
           <imagedata fileref="figures/bus_ar_invoicechange3.png"
-format="PNG" srccredit="Patrick Schweiger" />
+srccredit="Patrick Schweiger" />
         </imageobject>
 
         <textobject>
diff --git a/guide/ja/ch_bus_pay.xml b/guide/ja/ch_bus_pay.xml
index f44db905..7383ce35 100644
--- a/guide/ja/ch_bus_pay.xml
+++ b/guide/ja/ch_bus_pay.xml
@@ -338,7 +338,7 @@
       <mediaobject>
         <imageobject>
           <imagedata fileref="figures/bus_pay_ex1.png"
-srccredit="Patrick Schweiger" format="PNG"/>
+srccredit="Patrick Schweiger"/>
         </imageobject>
 
         <textobject>
@@ -522,7 +522,7 @@ srccredit="Patrick Schweiger" format="PNG"/>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_pay_ex2.png"
-srccredit="Patrick Schweiger" format="PNG"/>
+srccredit="Patrick Schweiger"/>
           </imageobject>
 
           <textobject>
@@ -550,7 +550,7 @@ srccredit="Patrick Schweiger" format="PNG"/>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_pay_ex3.png"
-srccredit="Patrick Schweiger" format="PNG"/>
+srccredit="Patrick Schweiger"/>
           </imageobject>
 
           <textobject>
@@ -578,7 +578,7 @@ srccredit="Patrick Schweiger" format="PNG"/>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/bus_pay_ex4.png"
-srccredit="Patrick Schweiger" format="PNG"/>
+srccredit="Patrick Schweiger"/>
           </imageobject>
 
           <textobject>
diff --git a/guide/ja/ch_capgain.xml b/guide/ja/ch_capgain.xml
index da343141..6799a3a3 100644
--- a/guide/ja/ch_capgain.xml
+++ b/guide/ja/ch_capgain.xml
@@ -143,7 +143,7 @@
     <screenshot id="capgain_appmain">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/capgain_appmain.png" format="PNG"
+          <imagedata fileref="figures/capgain_appmain.png"
 srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -173,7 +173,7 @@ srccredit="Bengt Thuree" />
       <screenshot id="capgain_app2main">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/capgain_app2main.png" format="PNG"
+            <imagedata fileref="figures/capgain_app2main.png"
 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -305,7 +305,7 @@ srccredit="Bengt Thuree" />
           <screenshot id="capgain_app3main">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/capgain_app3main.png" format="PNG"
+                <imagedata fileref="figures/capgain_app3main.png"
 srccredit="Bengt Thuree" />
               </imageobject>
 
diff --git a/guide/ja/ch_cbook.xml b/guide/ja/ch_cbook.xml
index ec30c87d..1113b633 100644
--- a/guide/ja/ch_cbook.xml
+++ b/guide/ja/ch_cbook.xml
@@ -188,7 +188,7 @@ linkend="chapter_cc"></xref>で説明します。よって&app;でクレジッ
       <screenshot id="cbook-gcashdata4">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cbook_gcashdata4.png" format="PNG"
+            <imagedata fileref="figures/cbook_gcashdata4.png"
 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -220,7 +220,7 @@ srccredit="Bengt Thuree" />
           <screenshot id="cbook-transferin">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_transferin.png" format="PNG"
+                <imagedata fileref="figures/cbook_transferin.png"
 srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -249,7 +249,7 @@ srccredit="Bengt Thuree" />
           <screenshot id="cbook-checkexamp">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_checkexamp.png" format="PNG"
+                <imagedata fileref="figures/cbook_checkexamp.png"
 srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -275,7 +275,7 @@ srccredit="Bengt Thuree" />
           <screenshot id="cbook-atm">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_atm.png" format="PNG"
+                <imagedata fileref="figures/cbook_atm.png"
 srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -302,7 +302,7 @@ srccredit="Bengt Thuree" />
       <screenshot id="cbook-bankstmt">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cbook_bankstmt.png" format="PNG"
+            <imagedata fileref="figures/cbook_bankstmt.png"
 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -332,7 +332,7 @@ srccredit="Bengt Thuree" />
           <screenshot id="cbook-reconexamp">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_reconexamp.png" format="PNG"
+                <imagedata fileref="figures/cbook_reconexamp.png"
 srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -363,7 +363,7 @@ srccredit="Bengt Thuree" />
           <screenshot id="cbook-servch">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_servch.png" format="PNG"
+                <imagedata fileref="figures/cbook_servch.png"
 srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -391,7 +391,7 @@ srccredit="Bengt Thuree" />
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cbook_reconciledCheckAct.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
@@ -419,7 +419,7 @@ format="PNG" srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/cbook_chartaccts5.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -454,7 +454,7 @@ format="PNG" srccredit="Bengt Thuree" />
           <screenshot id="cbook-puttoget2-Cash">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_CashFlow.png" format="PNG"
+                <imagedata fileref="figures/cbook_CashFlow.png"
 srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -484,7 +484,7 @@ srccredit="Bengt Thuree" />
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cbook_TransactionRptAssets.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
@@ -507,7 +507,7 @@ format="PNG" srccredit="Bengt Thuree" />
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cbook_TransactionRptExpenses.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
diff --git a/guide/ja/ch_cc.xml b/guide/ja/ch_cc.xml
index e4618672..be042ecd 100644
--- a/guide/ja/ch_cc.xml
+++ b/guide/ja/ch_cc.xml
@@ -204,7 +204,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/cc_Reversing_Transaction_1.png"
-format="PNG" srccredit="Bengt Thuree"></imagedata>
+srccredit="Bengt Thuree"></imagedata>
             </imageobject>
 
             <textobject>
@@ -225,7 +225,7 @@ format="PNG" srccredit="Bengt Thuree"></imagedata>
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/cc_Reversing_Transaction_2.png"
-format="PNG" srccredit="Bengt Thuree"></imagedata>
+srccredit="Bengt Thuree"></imagedata>
             </imageobject>
 
             <textobject>
@@ -264,7 +264,7 @@ format="PNG" srccredit="Bengt Thuree"></imagedata>
       <screenshot id="cc-accounts">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_accounts.png" format="PNG"
+            <imagedata fileref="figures/cc_accounts.png"
 srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -299,7 +299,7 @@ srccredit="Bengt Thuree"></imagedata>
       <screenshot id="cc-purchases">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_purchases.png" format="PNG"
+            <imagedata fileref="figures/cc_purchases.png"
 srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -330,7 +330,7 @@ srccredit="Bengt Thuree"></imagedata>
       <screenshot id="cc-refund">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_refund.png" format="PNG"
+            <imagedata fileref="figures/cc_refund.png"
 srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -357,7 +357,7 @@ srccredit="Bengt Thuree"></imagedata>
       <screenshot id="cc-interest">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_interest.png" format="PNG"
+            <imagedata fileref="figures/cc_interest.png"
 srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -392,7 +392,7 @@ srccredit="Bengt Thuree"></imagedata>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/cc_reconcile_init.png"
-format="PNG" srccredit="Bengt Thuree"></imagedata>
+srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
           <textobject>
@@ -413,7 +413,7 @@ format="PNG" srccredit="Bengt Thuree"></imagedata>
       <screenshot id="cc-reconcile">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_reconcile.png" format="PNG"
+            <imagedata fileref="figures/cc_reconcile.png"
 srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -446,7 +446,7 @@ srccredit="Bengt Thuree"></imagedata>
       <screenshot id="cc-payment">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_payment.png" format="PNG"
+            <imagedata fileref="figures/cc_payment.png"
 srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -468,7 +468,7 @@ srccredit="Bengt Thuree"></imagedata>
       <screenshot id="cc-final">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_final.png" format="PNG"
+            <imagedata fileref="figures/cc_final.png"
 srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -511,7 +511,7 @@ srccredit="Bengt Thuree"></imagedata>
           <screenshot id="cc-puttoget2-Cash">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cc_CashFlow.png" format="PNG"
+                <imagedata fileref="figures/cc_CashFlow.png"
 srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -541,7 +541,7 @@ srccredit="Bengt Thuree" />
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cc_TransactionRptVisa.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
@@ -564,7 +564,7 @@ format="PNG" srccredit="Bengt Thuree" />
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cc_TransactionRptExpenses.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
diff --git a/guide/ja/ch_currency.xml b/guide/ja/ch_currency.xml
index d4a598ff..7565603e 100644
--- a/guide/ja/ch_currency.xml
+++ b/guide/ja/ch_currency.xml
@@ -116,7 +116,7 @@
     <screenshot id="currency_main1">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/currency_main1.png" format="PNG"
+          <imagedata fileref="figures/currency_main1.png"
 srccredit="Geert Janssens" />
         </imageobject>
 
@@ -186,7 +186,7 @@ url="&url-wp-ja;ISO_4217">ISO
     <screenshot id="currency_main1a">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/currency_main1.png" format="PNG"
+          <imagedata fileref="figures/currency_main1.png"
 srccredit="Geert Janssens" />
         </imageobject>
 
@@ -213,7 +213,7 @@ srccredit="Geert Janssens" />
       <screenshot id="currency_peditor">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/currency_peditor.png" format="PNG"
+            <imagedata fileref="figures/currency_peditor.png"
 srccredit="Geert Janssens" />
           </imageobject>
 
@@ -236,7 +236,7 @@ srccredit="Geert Janssens" />
       <screenshot id="currency_addcurr">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/currency_addcurr.png" format="PNG"
+            <imagedata fileref="figures/currency_addcurr.png"
 srccredit="Geert Janssens" />
           </imageobject>
 
@@ -260,7 +260,7 @@ srccredit="Geert Janssens" />
         <mediaobject>
           <imageobject>
             <imagedata
-fileref="figures/currency_BeforeGetOnlineQuotes.png" format="PNG"
+fileref="figures/currency_BeforeGetOnlineQuotes.png"
 srccredit="Geert Janssens" />
           </imageobject>
 
@@ -278,7 +278,7 @@ srccredit="Geert Janssens" />
       <screenshot id="currency_main2">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/currency_main2.png" format="PNG"
+            <imagedata fileref="figures/currency_main2.png"
 srccredit="Geert Janssens" />
           </imageobject>
 
@@ -315,7 +315,7 @@ srccredit="Geert Janssens" />
         <mediaobject>
           <imageobject>
             <imagedata
-fileref="figures/currency_BeforeGetOnlineQuotes.png" format="PNG"
+fileref="figures/currency_BeforeGetOnlineQuotes.png"
 srccredit="Geert Janssens" />
           </imageobject>
 
@@ -343,7 +343,7 @@ srccredit="Geert Janssens" />
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/currency_AfterGetOnlineQuotes.png"
-format="PNG" srccredit="Geert Janssens" />
+srccredit="Geert Janssens" />
             </imageobject>
 
             <textobject>
@@ -371,7 +371,7 @@ linkend="invest-stockprice-auto2"
       <screenshot id="currency_main3.png">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/currency_main3.png" format="PNG"
+            <imagedata fileref="figures/currency_main3.png"
 srccredit="Geert Janssens" />
           </imageobject>
 
@@ -486,7 +486,7 @@ srccredit="Geert Janssens" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_purchase_MoveMoney.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -508,7 +508,7 @@ format="PNG" srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata
-fileref="figures/currency_purchase_SetExchangeRate.png" format="PNG"
+fileref="figures/currency_purchase_SetExchangeRate.png"
 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -533,7 +533,7 @@ srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_purchase_BeforeBoat.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -555,7 +555,7 @@ format="PNG" srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_purchase_AfterBoat.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -627,7 +627,7 @@ url="&url-yh-fin;lookup"><citetitle>Yahoo!
         <mediaobject>
           <imageobject>
             <imagedata
-fileref="figures/currency_purchase_BeforeStocks.png" format="PNG"
+fileref="figures/currency_purchase_BeforeStocks.png"
 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -653,7 +653,7 @@ srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_purchase_Commodities.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -691,7 +691,7 @@ format="PNG" srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_purchase_ToAmount.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -712,7 +712,7 @@ format="PNG" srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/currency_purchase_AfterStocks.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -1142,7 +1142,7 @@ linkend="invest-sell1" />と同様です)。
         <mediaobject>
           <imageobject>
             <imagedata
-fileref="figures/currency_PutTogether_AfterMoney.png" format="PNG"
+fileref="figures/currency_PutTogether_AfterMoney.png"
 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -1239,7 +1239,7 @@ srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata
-fileref="figures/currency_PutTogether_AussieHouse.png" format="PNG"
+fileref="figures/currency_PutTogether_AussieHouse.png"
 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -1471,7 +1471,7 @@ srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata
-fileref="figures/currency_PutTogether_AfterStocks.png" format="PNG"
+fileref="figures/currency_PutTogether_AfterStocks.png"
 srccredit="Bengt Thuree" />
           </imageobject>
 
diff --git a/guide/ja/ch_dep.xml b/guide/ja/ch_dep.xml
index 474b1234..2813d502 100644
--- a/guide/ja/ch_dep.xml
+++ b/guide/ja/ch_dep.xml
@@ -617,7 +617,7 @@ linkend="dep_example1" />を参照してください)。
     <screenshot id="dep_example">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/dep_example.png" format="PNG"
+          <imagedata fileref="figures/dep_example.png"
 srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -650,7 +650,7 @@ srccredit="Bengt Thuree" />
     <screenshot id="dep_assetreg">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/dep_assetreg.png" format="PNG"
+          <imagedata fileref="figures/dep_assetreg.png"
 srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -668,7 +668,7 @@ srccredit="Bengt Thuree" />
     <screenshot id="dep_assetmain">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/dep_assetmain.png" format="PNG"
+          <imagedata fileref="figures/dep_assetmain.png"
 srccredit="Bengt Thuree" />
         </imageobject>
 
diff --git a/guide/ja/ch_invest.xml b/guide/ja/ch_invest.xml
index 75760f5f..e31db061 100644
--- a/guide/ja/ch_invest.xml
+++ b/guide/ja/ch_invest.xml
@@ -239,7 +239,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_AccountsPredef.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -361,7 +361,7 @@ format="PNG" srccredit="Dave Herman"></imagedata>
       <screenshot id="invest-int">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/invest_int1.png" format="PNG"
+            <imagedata fileref="figures/invest_int1.png"
 srccredit="Dave Herman"></imagedata>
           </imageobject>
 
@@ -385,7 +385,7 @@ srccredit="Dave Herman"></imagedata>
       <screenshot id="invest-int2">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/invest_int2.png" format="PNG"
+            <imagedata fileref="figures/invest_int2.png"
 srccredit="Dave Herman"></imagedata>
           </imageobject>
 
@@ -406,7 +406,7 @@ srccredit="Dave Herman"></imagedata>
       <screenshot id="invest-int3">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/invest_int3.png" format="PNG"
+            <imagedata fileref="figures/invest_int3.png"
 srccredit="Dave Herman"></imagedata>
           </imageobject>
 
@@ -499,7 +499,7 @@ linkend="invest-buy-new2"><emphasis>新規株式の購入</emphasis>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_newaccount.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -574,7 +574,7 @@ format="PNG" srccredit="Dave Herman"></imagedata>
                 <mediaobject>
                   <imageobject>
                     <imagedata fileref="figures/invest_selectsecurity.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -641,7 +641,7 @@ format="PNG" srccredit="Dave Herman"></imagedata>
                       <mediaobject>
                         <imageobject>
                           <imagedata fileref="figures/invest_newsecurity.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
                         </imageobject>
 
                         <textobject>
@@ -725,7 +725,7 @@ format="PNG" srccredit="Dave Herman"></imagedata>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_setup_current.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -768,7 +768,7 @@ format="PNG" srccredit="Dave Herman"></imagedata>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_setup_portfolio1.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -815,7 +815,7 @@ format="PNG" srccredit="Dave Herman"></imagedata>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_SetupPortfolio2.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -897,7 +897,7 @@ format="PNG" srccredit="Dave Herman"></imagedata>
       <screenshot id="invest-peditor">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/invest_peditor.png" format="PNG"
+            <imagedata fileref="figures/invest_peditor.png"
 srccredit="Dave Herman"></imagedata>
           </imageobject>
 
@@ -927,7 +927,7 @@ srccredit="Dave Herman"></imagedata>
       <screenshot id="invest-peditor2">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/invest_peditor2.png" format="PNG"
+            <imagedata fileref="figures/invest_peditor2.png"
 srccredit="Dave Herman"></imagedata>
           </imageobject>
 
@@ -1074,7 +1074,7 @@ class="directory">$HOME/gnucash-filename</filename>はデータファイルの
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_stockvalue.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -1112,7 +1112,7 @@ role="strong">平均残高</emphasis>帳票のカスタマイズ画面です。
         <mediaobject>
           <imageobject>
             <imagedata
-fileref="figures/invest_stockvalue_report_options.png" format="PNG"
+fileref="figures/invest_stockvalue_report_options.png"
 srccredit="Dave Herman"></imagedata>
           </imageobject>
 
@@ -1154,7 +1154,7 @@ srccredit="Dave Herman"></imagedata>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_stockvalue_report.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -1454,7 +1454,7 @@ format="PNG" srccredit="Dave Herman"></imagedata>
       <screenshot id="invest-sellstock">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/invest_sellstock.png" format="PNG"
+            <imagedata fileref="figures/invest_sellstock.png"
 srccredit="Dave Herman"></imagedata>
           </imageobject>
 
@@ -1474,7 +1474,7 @@ srccredit="Dave Herman"></imagedata>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_sellstock2.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -1628,7 +1628,7 @@ format="PNG" srccredit="Dave Herman"></imagedata>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_sellstockLoss.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -1647,7 +1647,7 @@ format="PNG" srccredit="Dave Herman"></imagedata>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_sellstockLoss2.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -1685,7 +1685,7 @@ format="PNG" srccredit="Dave Herman"></imagedata>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_dividendcash.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -1727,7 +1727,7 @@ format="PNG" srccredit="Dave Herman"></imagedata>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_dividendreinvest1.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -1745,7 +1745,7 @@ format="PNG" srccredit="Dave Herman"></imagedata>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_dividendreinvest2.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -1788,7 +1788,7 @@ format="PNG" srccredit="Dave Herman"></imagedata>
       <screenshot id="invest-split1">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/invest_split1.png" format="PNG"
+            <imagedata fileref="figures/invest_split1.png"
 srccredit="Dave Herman"></imagedata>
           </imageobject>
 
@@ -1810,7 +1810,7 @@ srccredit="Dave Herman"></imagedata>
       <screenshot id="invest-split2">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/invest_split2.png" format="PNG"
+            <imagedata fileref="figures/invest_split2.png"
 srccredit="Dave Herman"></imagedata>
           </imageobject>
 
@@ -1871,7 +1871,7 @@ srccredit="Dave Herman"></imagedata>
       <screenshot id="invest-split3">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/invest_split3.png" format="PNG"
+            <imagedata fileref="figures/invest_split3.png"
 srccredit="Dave Herman"></imagedata>
           </imageobject>
 
@@ -1893,7 +1893,7 @@ srccredit="Dave Herman"></imagedata>
       <screenshot id="invest-split4">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/invest_split4.png" format="PNG"
+            <imagedata fileref="figures/invest_split4.png"
 srccredit="Dave Herman"></imagedata>
           </imageobject>
 
@@ -1917,7 +1917,7 @@ srccredit="Dave Herman"></imagedata>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_simplesplit1.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -1955,7 +1955,7 @@ format="PNG" srccredit="Dave Herman"></imagedata>
       <screenshot id="invest-merge2">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/invest_merge2.png" format="PNG"
+            <imagedata fileref="figures/invest_merge2.png"
 srccredit="Dave Herman"></imagedata>
           </imageobject>
 
@@ -2019,7 +2019,7 @@ srccredit="Dave Herman"></imagedata>
       <screenshot id="invest-merge3">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/invest_merge3.png" format="PNG"
+            <imagedata fileref="figures/invest_merge3.png"
 srccredit="Dave Herman"></imagedata>
           </imageobject>
 
@@ -2046,7 +2046,7 @@ srccredit="Dave Herman"></imagedata>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_stockmerge1.png"
-format="PNG" srccredit="Dave Herman"></imagedata>
+srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
diff --git a/guide/ja/ch_loans.xml b/guide/ja/ch_loans.xml
index 2b804ea1..e0dc35a5 100644
--- a/guide/ja/ch_loans.xml
+++ b/guide/ja/ch_loans.xml
@@ -159,7 +159,7 @@
     <screenshot id="loans_fcalc">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/loans_fcalc.png" format="PNG"
+          <imagedata fileref="figures/loans_fcalc.png"
 srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -389,7 +389,7 @@ PMT===0 の場合は簡単で、解は次のようになります。
     <screenshot id="loans_mortgage">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/loans_mortgage1.png" format="PNG"
+          <imagedata fileref="figures/loans_mortgage1.png"
 srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -486,7 +486,7 @@ srccredit="Bengt Thuree" />
     <screenshot id="loans_mortgage2.png">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/loans_mortgage2.png" format="PNG"
+          <imagedata fileref="figures/loans_mortgage2.png"
 srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -507,7 +507,7 @@ srccredit="Bengt Thuree" />
     <screenshot id="loans_mortgage3">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/loans_mortgage3.png" format="PNG"
+          <imagedata fileref="figures/loans_mortgage3.png"
 srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -593,7 +593,7 @@ srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanCalculation.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -681,7 +681,7 @@ format="PNG" srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanInitial.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -737,7 +737,7 @@ format="PNG" srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanFirstPayment.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -797,7 +797,7 @@ format="PNG" srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata
-fileref="figures/loans_PrivateLoanSecondPayment.png" format="PNG"
+fileref="figures/loans_PrivateLoanSecondPayment.png"
 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -823,7 +823,7 @@ srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata
-fileref="figures/loans_PrivateLoanSecondPaymentAccounts.png" format="PNG"
+fileref="figures/loans_PrivateLoanSecondPaymentAccounts.png"
 srccredit="Bengt Thuree" />
           </imageobject>
 
diff --git a/guide/ja/ch_oview.xml b/guide/ja/ch_oview.xml
index c99cb412..e6b39f09 100644
--- a/guide/ja/ch_oview.xml
+++ b/guide/ja/ch_oview.xml
@@ -41,12 +41,12 @@
       <mediaobject>
         <imageobject role="html">
           <imagedata fileref="figures/oview_intro.png"
-format="PNG" srccredit="Bengt Thuree" width="510"></imagedata>
+srccredit="Bengt Thuree" width="510"></imagedata>
         </imageobject>
 
         <imageobject role="fo">
           <imagedata
-fileref="figures/oview_intro.png" format="PNG" srccredit="Bengt
+fileref="figures/oview_intro.png" srccredit="Bengt
 Thuree"></imagedata>
         </imageobject>
 
diff --git a/guide/ja/ch_txns.xml b/guide/ja/ch_txns.xml
index e9c247c5..affc79fc 100644
--- a/guide/ja/ch_txns.xml
+++ b/guide/ja/ch_txns.xml
@@ -68,7 +68,7 @@ function="enter">Enter</keycap>キーを押します。
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_register_2account.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -95,7 +95,7 @@ format="PNG" srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_register_2account2.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -148,7 +148,7 @@ function="enter">Enter</keycap>を押すと、スプリット画面が<quote>折
         <title>スプリット取引の入力</title><mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_register_multiaccount.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -186,7 +186,7 @@ format="PNG" srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_registersplit2.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -224,7 +224,7 @@ format="PNG" srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_registersplit3.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -296,7 +296,7 @@ format="PNG" srccredit="Bengt Thuree" />
       <mediaobject>
         <imageobject>
           <imagedata fileref="figures/txns_registersplit4.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
         </imageobject>
 
         <textobject>
@@ -320,7 +320,7 @@ format="PNG" srccredit="Bengt Thuree" />
       <mediaobject>
         <imageobject>
           <imagedata fileref="figures/txns_registersplit5.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
         </imageobject>
 
         <textobject>
@@ -341,7 +341,7 @@ format="PNG" srccredit="Bengt Thuree" />
       <mediaobject>
         <imageobject>
           <imagedata fileref="figures/txns_registersplit6.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
         </imageobject>
 
         <textobject>
@@ -562,14 +562,14 @@ linkend="rec-start-blnc"><guilabel>期首残高</guilabel></link>を壊さず変
         <mediaobject>
           <imageobject role="html">
             <imagedata
-fileref="figures/txns_reconcile_window1.png" format="PNG"
+fileref="figures/txns_reconcile_window1.png"
 srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
           <imageobject
 role="fo">
             <imagedata fileref="figures/txns_reconcile_window1.png"
-format="PNG" srccredit="Cristian Marchi"></imagedata>
+srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
           <textobject>
@@ -676,13 +676,13 @@ format="PNG" srccredit="Cristian Marchi"></imagedata>
         <mediaobject>
           <imageobject role="html">
             <imagedata
-fileref="figures/txns_reconcile_window2.png" format="PNG"
+fileref="figures/txns_reconcile_window2.png"
 srccredit="Cristian Marchi" width="510"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
             <imagedata
-fileref="figures/txns_reconcile_window2.png" format="PNG"
+fileref="figures/txns_reconcile_window2.png"
 srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -759,7 +759,7 @@ srccredit="Cristian Marchi"></imagedata>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_reconcile_window3.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -800,7 +800,7 @@ linkend="txns-sxn-editor2">予定取引エディター</link>の2つの方法が
       <screenshot id="txns-sxn-ledger-1">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_sxn_ledger1.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_ledger1.png"
 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -826,7 +826,7 @@ srccredit="Bengt Thuree" />
       <screenshot id="txns-sxn-ledger-2">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_sxn_ledger2.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_ledger2.png"
 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -847,7 +847,7 @@ srccredit="Bengt Thuree" />
       <screenshot id="txns-sxn-ledger-3">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_sxn_ledger3.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_ledger3.png"
 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -869,7 +869,7 @@ srccredit="Bengt Thuree" />
       <screenshot id="txns-sxn-ledger-4">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_sxn_ledger4.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_ledger4.png"
 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -907,12 +907,12 @@ srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject role="html">
             <imagedata fileref="figures/txns_sxn_editor-2.png"
-format="PNG" srccredit="Cristian Marchi" width="510"/>
+srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
             <imagedata fileref="figures/txns_sxn_editor-2.png"
-format="PNG" srccredit="Cristian Marchi"/>
+srccredit="Cristian Marchi"/>
           </imageobject>
 
           <textobject>
@@ -935,14 +935,14 @@ format="PNG" srccredit="Cristian Marchi"/>
         <mediaobject>
           <imageobject role="html">
             <imagedata
-fileref="figures/txns_sxn_editor-3-overview.png" format="PNG"
+fileref="figures/txns_sxn_editor-3-overview.png"
 srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject
 role="fo">
             <imagedata fileref="figures/txns_sxn_editor-3-overview.png"
-format="PNG" srccredit="Cristian Marchi" />
+srccredit="Cristian Marchi" />
           </imageobject>
 
           <textobject>
@@ -1020,14 +1020,14 @@ format="PNG" srccredit="Cristian Marchi" />
         <mediaobject>
           <imageobject role="html">
             <imagedata
-fileref="figures/txns_sxn_editor-3-frequency.png" format="PNG"
+fileref="figures/txns_sxn_editor-3-frequency.png"
 srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject
 role="fo">
             <imagedata fileref="figures/txns_sxn_editor-3-frequency.png"
-format="PNG" srccredit="Cristian Marchi" />
+srccredit="Cristian Marchi" />
           </imageobject>
 
           <textobject>
@@ -1105,14 +1105,14 @@ format="PNG" srccredit="Cristian Marchi" />
         <mediaobject>
           <imageobject role="html">
             <imagedata
-fileref="figures/txns_sxn_editor-3-template.png" format="PNG"
+fileref="figures/txns_sxn_editor-3-template.png"
 srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject
 role="fo">
             <imagedata fileref="figures/txns_sxn_editor-3-template.png"
-format="PNG" srccredit="Cristian Marchi" />
+srccredit="Cristian Marchi" />
           </imageobject>
 
           <textobject>
@@ -1137,12 +1137,12 @@ format="PNG" srccredit="Cristian Marchi" />
         <mediaobject>
           <imageobject role="html">
             <imagedata fileref="figures/txns_sxn_editor-4.png"
-format="PNG" srccredit="Cristian Marchi" width="510"/>
+srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
             <imagedata fileref="figures/txns_sxn_editor-4.png"
-format="PNG" srccredit="Cristian Marchi" />
+srccredit="Cristian Marchi" />
           </imageobject>
 
           <textobject>
@@ -1179,13 +1179,13 @@ format="PNG" srccredit="Cristian Marchi" />
         <mediaobject>
           <imageobject role="html">
             <imagedata
-fileref="figures/txns_sxn_editor_slr.png" format="PNG" srccredit="Cristian
+fileref="figures/txns_sxn_editor_slr.png" srccredit="Cristian
 Marchi" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
             <imagedata
-fileref="figures/txns_sxn_editor_slr.png" format="PNG" srccredit="Cristian
+fileref="figures/txns_sxn_editor_slr.png" srccredit="Cristian
 Marchi" />
           </imageobject>
 
@@ -1243,7 +1243,7 @@ Marchi" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_puttoget_Charts.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -1304,7 +1304,7 @@ function="enter">Enter</keycap>キーを押すか、または<guibutton>入力</
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_puttoget_Charts1.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -1405,7 +1405,7 @@ format="PNG" srccredit="Bengt Thuree" />
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_puttoget_Charts2.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -1455,7 +1455,7 @@ format="PNG" srccredit="Bengt Thuree" />
           <screenshot id="txns-puttoget2-Cash">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_CashFlow.png" format="PNG"
+                <imagedata fileref="figures/txns_CashFlow.png"
 srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -1489,7 +1489,7 @@ srccredit="Bengt Thuree" />
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/txns_TransactionRptChecking.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
@@ -1512,7 +1512,7 @@ format="PNG" srccredit="Bengt Thuree" />
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/txns_TransactionRptExpenses.png"
-format="PNG" srccredit="Bengt Thuree" />
+srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
diff --git a/guide/ru/ch_accts.xml b/guide/ru/ch_accts.xml
index 733a8c8b..fa526c04 100644
--- a/guide/ru/ch_accts.xml
+++ b/guide/ru/ch_accts.xml
@@ -60,7 +60,7 @@
       <mediaobject>
         <imageobject role="html">
           <imagedata fileref="figures/basics_AccountRelationships.png"
-                     format="PNG" srccredit="DiMan"></imagedata>
+                     srccredit="DiMan"></imagedata>
         </imageobject>
 
         <imageobject role="fo">
@@ -504,7 +504,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/accts_DefaultIncomeAccounts.png"
-                         format="PNG" srccredit="DiMan"></imagedata>
+                         srccredit="DiMan"></imagedata>
           </imageobject>
 
           <textobject>
@@ -523,7 +523,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/accts_DefaultExpenseAccounts.png"
-                         format="PNG" srccredit="DiMan"></imagedata>
+                         srccredit="DiMan"></imagedata>
           </imageobject>
 
           <textobject>
@@ -701,7 +701,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/accts_CreateAssetsAccount.png"
-                             format="PNG" srccredit="DiMan"></imagedata>
+                             srccredit="DiMan"></imagedata>
               </imageobject>
 
               <textobject>
@@ -755,7 +755,7 @@
       <screenshot id="accts-toplevel">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/accts_toplevel.png" format="PNG"
+            <imagedata fileref="figures/accts_toplevel.png"
                        srccredit="DiMan"></imagedata>
           </imageobject>
 
@@ -913,7 +913,7 @@
       <screenshot id="accts-tree">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/accts_tree.png" format="PNG"
+            <imagedata fileref="figures/accts_tree.png"
                        srccredit="DiMan"></imagedata>
           </imageobject>
 
diff --git a/guide/ru/ch_basics.xml b/guide/ru/ch_basics.xml
index 339e9708..90ae9bf1 100644
--- a/guide/ru/ch_basics.xml
+++ b/guide/ru/ch_basics.xml
@@ -150,7 +150,7 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/basics_AccountRelationships.png"
-                         format="PNG" srccredit="Geert Janssens"></imagedata>
+                         srccredit="Geert Janssens"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
@@ -448,7 +448,7 @@
       <screenshot id="basics-TipOfDay">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/basics_TipOfDay.png" format="PNG"
+            <imagedata fileref="figures/basics_TipOfDay.png"
                        srccredit="DiMan"></imagedata>
           </imageobject>
 
@@ -490,7 +490,7 @@
       <screenshot id="basics-Accounts">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/basics_Accounts.png" format="PNG"
+            <imagedata fileref="figures/basics_Accounts.png"
                        srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -570,12 +570,12 @@
       <screenshot id="basics-CheckAccount">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/basics_CheckAccount.png" format="PNG"
+            <imagedata fileref="figures/basics_CheckAccount.png"
                        srccredit="Bengt Thuree" width="510"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/basics_CheckAccount.png" format="PNG"
+            <imagedata fileref="figures/basics_CheckAccount.png"
                        srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -956,12 +956,12 @@
                   <acronym>sqlite3</acronym>.</title><screenshot id="basics-SaveXML">
                   <mediaobject>
                     <imageobject role="html">
-                      <imagedata fileref="figures/basics_SaveXML.png" format="PNG"
+                      <imagedata fileref="figures/basics_SaveXML.png"
                          srccredit="DiMan" width="510px"></imagedata>
                     </imageobject>
 
                     <imageobject role="fo">
-                      <imagedata fileref="figures/basics_SaveXML.png" format="PNG"
+                      <imagedata fileref="figures/basics_SaveXML.png"
                          srccredit="DiMan"></imagedata>
                     </imageobject>
 
@@ -1022,12 +1022,12 @@
                   <acronym>postgres</acronym>.</title><screenshot id="basics-SaveSQL">
                   <mediaobject>
                     <imageobject role="html">
-                      <imagedata fileref="figures/basics_SaveSQL.png" format="PNG"
+                      <imagedata fileref="figures/basics_SaveSQL.png"
                              srccredit="Marchi Cristian" width="510px"></imagedata>
                     </imageobject>
 
                     <imageobject role="fo">
-                      <imagedata fileref="figures/basics_SaveSQL.png" format="PNG"
+                      <imagedata fileref="figures/basics_SaveSQL.png"
                              srccredit="Cristian Marchi"></imagedata>
                     </imageobject>
 
@@ -1637,12 +1637,12 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/basics_NewAccountHierarchySetup.png"
-                       format="PNG" srccredit="DiMan" width="510"></imagedata>
+                       srccredit="DiMan" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/basics_NewAccountHierarchySetup.png"
-                       format="PNG" srccredit="DiMan"></imagedata>
+                       srccredit="DiMan"></imagedata>
             </imageobject>
 
             <textobject>
@@ -1681,12 +1681,12 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/basics_NewAccountHierarchySetup_Currency.png"
-                       format="PNG" srccredit="DiMan" width="510"></imagedata>
+                       srccredit="DiMan" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/basics_NewAccountHierarchySetup_Currency.png"
-                       format="PNG" srccredit="DiMan"></imagedata>
+                       srccredit="DiMan"></imagedata>
             </imageobject>
 
             <textobject>
@@ -1722,12 +1722,12 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/basics_NewAccountHierarchySetup_NewBookOpts.png"
-                       format="PNG" srccredit="DiMan" width="510"></imagedata>
+                       srccredit="DiMan" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/basics_NewAccountHierarchySetup_NewBookOpts.png"
-                       format="PNG" srccredit="DiMan"></imagedata>
+                       srccredit="DiMan"></imagedata>
             </imageobject>
 
             <textobject>
@@ -1765,12 +1765,12 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/basics_NewAccountHierarchySetup_Accounts.png"
-                       format="PNG" srccredit="DiMan" width="510"></imagedata>
+                       srccredit="DiMan" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/basics_NewAccountHierarchySetup_Accounts.png"
-                       format="PNG" srccredit="DiMan"></imagedata>
+                       srccredit="DiMan"></imagedata>
             </imageobject>
 
             <textobject>
@@ -1802,12 +1802,12 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/basics_NewAccountHierarchySetup_Setup.png"
-                       format="PNG" srccredit="DiMan" width="510"></imagedata>
+                       srccredit="DiMan" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/basics_NewAccountHierarchySetup_Setup.png"
-                       format="PNG" srccredit="DiMan"></imagedata>
+                       srccredit="DiMan"></imagedata>
             </imageobject>
 
             <textobject>
@@ -1836,12 +1836,12 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/basics_NewAccountHierarchySetup_Finish.png"
-                       format="PNG" srccredit="DiMan" width="510"></imagedata>
+                       srccredit="DiMan" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/basics_NewAccountHierarchySetup_Finish.png"
-                       format="PNG" srccredit="DiMan"></imagedata>
+                       srccredit="DiMan"></imagedata>
             </imageobject>
 
             <textobject>
@@ -1878,12 +1878,12 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/basics_EmptyAccounts.png"
-                       format="PNG" srccredit="DiMan" width="510"></imagedata>
+                       srccredit="DiMan" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/basics_EmptyAccounts.png"
-                       format="PNG" srccredit="DiMan"></imagedata>
+                       srccredit="DiMan"></imagedata>
             </imageobject>
 
             <textobject>
diff --git a/guide/ru/ch_bus_features.xml b/guide/ru/ch_bus_features.xml
index a673ae43..6d419062 100644
--- a/guide/ru/ch_bus_features.xml
+++ b/guide/ru/ch_bus_features.xml
@@ -178,12 +178,12 @@
         <title>Sales Tax Tables Editor</title><screenshot id="bus-taxmain">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/bus_tax_main.png" format="PNG"
+              <imagedata fileref="figures/bus_tax_main.png"
                          srccredit="Chris Good" width="510px" />
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/bus_tax_main.png" format="PNG"
+              <imagedata fileref="figures/bus_tax_main.png"
                         srccredit="Chris Good" />
             </imageobject>
 
@@ -198,7 +198,7 @@
         <title>New Sales Tax Table Entry</title><screenshot id="bus-taxnew">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/bus_tax_new.png" format="PNG"
+              <imagedata fileref="figures/bus_tax_new.png"
                          srccredit="Chris Good" />
             </imageobject>
 
@@ -544,7 +544,7 @@
         <title>Entering Company Information</title><screenshot id="bus-co-reg">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/bus_co_reg.png" format="PNG"
+              <imagedata fileref="figures/bus_co_reg.png"
                         srccredit="Chris Good" />
             </imageobject>
 
@@ -641,7 +641,7 @@
         <title>Billing Terms Editor</title><screenshot id="bus-termsmain">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/bus_terms_main.png" format="PNG"
+              <imagedata fileref="figures/bus_terms_main.png"
                         srccredit="Chris Good" />
             </imageobject>
 
@@ -656,7 +656,7 @@
         <title>New Billing Term</title><screenshot id="bus-termsnew">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/bus_terms_new.png" format="PNG"
+              <imagedata fileref="figures/bus_terms_new.png"
                          srccredit="Chris Good" />
             </imageobject>
 
@@ -819,7 +819,7 @@
           <title>New Customer Registration Window</title><screenshot id="bus-ar-custnew">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ar_custnew.png" format="PNG"
+                <imagedata fileref="figures/bus_ar_custnew.png"
                             srccredit="Patrick Schweiger" />
               </imageobject>
 
@@ -848,7 +848,7 @@
           <title>Find Customer Window</title><screenshot id="bus-ar-custfind">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ar_custfind.png" format="PNG"
+                <imagedata fileref="figures/bus_ar_custfind.png"
                             srccredit="Patrick Schweiger" />
               </imageobject>
 
@@ -917,7 +917,7 @@
           <title>Creating a New Invoice</title><screenshot id="bus-ar-invoicenew">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ar_invoicenew.png" format="PNG"
+                <imagedata fileref="figures/bus_ar_invoicenew.png"
                             srccredit="Patrick Schweiger" />
               </imageobject>
 
@@ -945,7 +945,7 @@
           <title>Edit Invoice Window</title><screenshot id="bus-ar-invoiceedit">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ar_invoiceedit.png" format="PNG"
+                <imagedata fileref="figures/bus_ar_invoiceedit.png"
                             srccredit="Patrick Schweiger" />
               </imageobject>
 
@@ -974,7 +974,7 @@
           <title>Post Invoice Window</title><screenshot id="bus-ar-invoicepost">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ar_invoicepost.png" format="PNG"
+                <imagedata fileref="figures/bus_ar_invoicepost.png"
                             srccredit="Patrick Schweiger" />
               </imageobject>
 
@@ -1039,7 +1039,7 @@
           <title>Invoice Print Output</title><screenshot id="bus-ar-invoiceprint">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ar_invoiceprint.png" format="PNG"
+                <imagedata fileref="figures/bus_ar_invoiceprint.png"
                             srccredit="Patrick Schweiger" />
               </imageobject>
 
@@ -1130,7 +1130,7 @@
         <title>New Customer Job</title><screenshot id="bus-ar-jobnew">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/bus_ar_jobnew.png" format="PNG"
+              <imagedata fileref="figures/bus_ar_jobnew.png"
                         srccredit="Patrick Schweiger" />
             </imageobject>
 
@@ -1186,12 +1186,12 @@
         <title>Process Customer Payment</title><screenshot id="bus-ar-payment">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/bus_ar_payment.png" format="PNG"
+              <imagedata fileref="figures/bus_ar_payment.png"
                         srccredit="Patrick Schweiger" width="510px" scalefit="0" />
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/bus_ar_payment.png" format="PNG"
+              <imagedata fileref="figures/bus_ar_payment.png"
                         srccredit="Patrick Schweiger" />
             </imageobject>
 
@@ -1240,7 +1240,7 @@
         <title>The New Style Sheet Window</title><screenshot id="bus-ar-invoicechange1">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/bus_ar_invoicechange1.png" format="PNG"
+              <imagedata fileref="figures/bus_ar_invoicechange1.png"
                         srccredit="Cristian Marchi" />
             </imageobject>
 
@@ -1280,12 +1280,12 @@
         <title>HTML Style Sheets Example Window</title><screenshot id="bus-ar-invoicechange2">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/bus_ar_invoicechange2.png" format="PNG"
+              <imagedata fileref="figures/bus_ar_invoicechange2.png"
                         srccredit="Cristian Marchi" width="510"/>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/bus_ar_invoicechange2.png" format="PNG"
+              <imagedata fileref="figures/bus_ar_invoicechange2.png"
                         srccredit="Cristian Marchi"/>
             </imageobject>
 
@@ -1322,7 +1322,7 @@
         <title>HTML Style Sheets Example Output</title><screenshot id="bus-ar-invoicechange3">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/bus_ar_invoicechange3.png" format="PNG"
+              <imagedata fileref="figures/bus_ar_invoicechange3.png"
                         srccredit="Patrick Schweiger" />
             </imageobject>
 
@@ -1424,7 +1424,7 @@
           <title>New Vendor Registration Window</title><screenshot id="bus-ap-vendornew">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ap_vendornew.png" srccredit="Patrick Schweiger" format="PNG"/>
+                <imagedata fileref="figures/bus_ap_vendornew.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -1452,7 +1452,7 @@
           <title>Find Vendor Window</title><screenshot id="bus-ar-vendorfind">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ap_vendorfind.png" srccredit="Patrick Schweiger" format="PNG"/>
+                <imagedata fileref="figures/bus_ap_vendorfind.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -1522,7 +1522,7 @@
           <title>New Bill Registration Window</title><screenshot id="bus-ap-billnew">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ap_billnew.png" srccredit="Patrick Schweiger" format="PNG"/>
+                <imagedata fileref="figures/bus_ap_billnew.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -1548,7 +1548,7 @@
           <title>Edit Bill Window</title><screenshot id="bus-ap-billedit">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ap_billedit.png" srccredit="Patrick Schweiger" format="PNG"/>
+                <imagedata fileref="figures/bus_ap_billedit.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -1575,7 +1575,7 @@
           <title>Post Bill Window</title><screenshot id="bus-ap-billpost">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/bus_ap_billpost.png" srccredit="Patrick Schweiger" format="PNG"/>
+                <imagedata fileref="figures/bus_ap_billpost.png" srccredit="Patrick Schweiger"/>
               </imageobject>
 
               <textobject>
@@ -1631,7 +1631,7 @@
         <title>New Vendor Job</title><screenshot id="bus-ap-jobnew">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/bus_ap_jobnew.png" srccredit="Jon Lapham" format="PNG"/>
+              <imagedata fileref="figures/bus_ap_jobnew.png" srccredit="Jon Lapham"/>
             </imageobject>
 
             <textobject>
@@ -1680,11 +1680,11 @@
         <title>Process Vendor Payment</title><screenshot id="bus-ap-payment">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/bus_ap_payment.png" srccredit="Patrick Schweiger" format="PNG" width="510"/>
+              <imagedata fileref="figures/bus_ap_payment.png" srccredit="Patrick Schweiger" width="510"/>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/bus_ap_payment.png" srccredit="Patrick Schweiger" format="PNG"/>
+              <imagedata fileref="figures/bus_ap_payment.png" srccredit="Patrick Schweiger"/>
             </imageobject>
 
             <textobject>
@@ -2049,7 +2049,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/bus_pay_ex1.png"
-                 srccredit="Patrick Schweiger" format="PNG"/>
+                 srccredit="Patrick Schweiger"/>
             </imageobject>
 
             <textobject>
@@ -2222,7 +2222,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/bus_pay_ex2.png"
-                    srccredit="Patrick Schweiger" format="PNG"/>
+                    srccredit="Patrick Schweiger"/>
             </imageobject>
 
             <textobject>
@@ -2254,7 +2254,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/bus_pay_ex3.png"
-                    srccredit="Patrick Schweiger" format="PNG"/>
+                    srccredit="Patrick Schweiger"/>
             </imageobject>
 
             <textobject>
@@ -2276,7 +2276,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/bus_pay_ex4.png"
-                    srccredit="Patrick Schweiger" format="PNG"/>
+                    srccredit="Patrick Schweiger"/>
             </imageobject>
 
             <textobject>
diff --git a/guide/ru/ch_capgain.xml b/guide/ru/ch_capgain.xml
index 19d38319..94547ad9 100644
--- a/guide/ru/ch_capgain.xml
+++ b/guide/ru/ch_capgain.xml
@@ -169,7 +169,7 @@
     <screenshot id="capgain_appmain">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/capgain_appmain.png" format="PNG"
+          <imagedata fileref="figures/capgain_appmain.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -197,7 +197,7 @@
       <screenshot id="capgain_app2main">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/capgain_app2main.png" format="PNG"
+            <imagedata fileref="figures/capgain_app2main.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -336,7 +336,7 @@
           <screenshot id="capgain_app3main">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/capgain_app3main.png" format="PNG"
+                <imagedata fileref="figures/capgain_app3main.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
diff --git a/guide/ru/ch_cbook.xml b/guide/ru/ch_cbook.xml
index 1cc5da24..86c8e3b3 100644
--- a/guide/ru/ch_cbook.xml
+++ b/guide/ru/ch_cbook.xml
@@ -203,7 +203,7 @@
       <screenshot id="cbook-gcashdata4">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cbook_gcashdata4.png" format="PNG"
+            <imagedata fileref="figures/cbook_gcashdata4.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -237,7 +237,7 @@
           <screenshot id="cbook-transferin">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_transferin.png" format="PNG"
+                <imagedata fileref="figures/cbook_transferin.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -266,7 +266,7 @@
           <screenshot id="cbook-checkexamp">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_checkexamp.png" format="PNG"
+                <imagedata fileref="figures/cbook_checkexamp.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -294,7 +294,7 @@
           <screenshot id="cbook-atm">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_atm.png" format="PNG"
+                <imagedata fileref="figures/cbook_atm.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -322,7 +322,7 @@
       <screenshot id="cbook-bankstmt">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cbook_bankstmt.png" format="PNG"
+            <imagedata fileref="figures/cbook_bankstmt.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -352,7 +352,7 @@
           <screenshot id="cbook-reconexamp">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_reconexamp.png" format="PNG"
+                <imagedata fileref="figures/cbook_reconexamp.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -387,7 +387,7 @@
           <screenshot id="cbook-servch">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_servch.png" format="PNG"
+                <imagedata fileref="figures/cbook_servch.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -417,7 +417,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cbook_reconciledCheckAct.png"
-                           format="PNG" srccredit="Bengt Thuree" />
+                           srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
@@ -444,7 +444,7 @@
       <screenshot id="cbook-chartaccts5">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cbook_chartaccts5.png" format="PNG"
+            <imagedata fileref="figures/cbook_chartaccts5.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -483,7 +483,7 @@
           <screenshot id="cbook-puttoget2-Cash">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cbook_CashFlow.png" format="PNG"
+                <imagedata fileref="figures/cbook_CashFlow.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -514,7 +514,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cbook_TransactionRptAssets.png"
-                           format="PNG" srccredit="Bengt Thuree" />
+                           srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
@@ -538,7 +538,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cbook_TransactionRptExpenses.png"
-                           format="PNG" srccredit="Bengt Thuree" />
+                           srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
diff --git a/guide/ru/ch_cc.xml b/guide/ru/ch_cc.xml
index f6559b4f..d8a5b19e 100644
--- a/guide/ru/ch_cc.xml
+++ b/guide/ru/ch_cc.xml
@@ -236,7 +236,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/cc_Reversing_Transaction_1.png"
-                           format="PNG" srccredit="Bengt Thuree"></imagedata>
+                           srccredit="Bengt Thuree"></imagedata>
             </imageobject>
 
             <textobject>
@@ -258,7 +258,7 @@
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/cc_Reversing_Transaction_2.png"
-                           format="PNG" srccredit="Bengt Thuree"></imagedata>
+                           srccredit="Bengt Thuree"></imagedata>
             </imageobject>
 
             <textobject>
@@ -302,7 +302,7 @@
       <screenshot id="cc-accounts">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_accounts.png" format="PNG"
+            <imagedata fileref="figures/cc_accounts.png"
                      srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -338,7 +338,7 @@
       <screenshot id="cc-purchases">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_purchases.png" format="PNG"
+            <imagedata fileref="figures/cc_purchases.png"
                        srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -369,7 +369,7 @@
       <screenshot id="cc-refund">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_refund.png" format="PNG"
+            <imagedata fileref="figures/cc_refund.png"
                        srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -397,7 +397,7 @@
       <screenshot id="cc-interest">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_interest.png" format="PNG"
+            <imagedata fileref="figures/cc_interest.png"
                        srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -431,7 +431,7 @@
       <screenshot id="cc-reconcile-init">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_reconcile_init.png" format="PNG"
+            <imagedata fileref="figures/cc_reconcile_init.png"
                        srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -455,7 +455,7 @@
       <screenshot id="cc-reconcile">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_reconcile.png" format="PNG"
+            <imagedata fileref="figures/cc_reconcile.png"
                        srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -490,7 +490,7 @@
       <screenshot id="cc-payment">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_payment.png" format="PNG"
+            <imagedata fileref="figures/cc_payment.png"
                        srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -512,7 +512,7 @@
       <screenshot id="cc-final">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/cc_final.png" format="PNG"
+            <imagedata fileref="figures/cc_final.png"
                        srccredit="Bengt Thuree"></imagedata>
           </imageobject>
 
@@ -559,7 +559,7 @@
           <screenshot id="cc-puttoget2-Cash">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/cc_CashFlow.png" format="PNG"
+                <imagedata fileref="figures/cc_CashFlow.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -590,7 +590,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cc_TransactionRptVisa.png"
-                           format="PNG" srccredit="Bengt Thuree" />
+                           srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
@@ -613,7 +613,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/cc_TransactionRptExpenses.png"
-                           format="PNG" srccredit="Bengt Thuree" />
+                           srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
diff --git a/guide/ru/ch_currency.xml b/guide/ru/ch_currency.xml
index 703d979b..b6e2bcfd 100644
--- a/guide/ru/ch_currency.xml
+++ b/guide/ru/ch_currency.xml
@@ -128,7 +128,7 @@ TODO -->
       <screenshot id="currency_main1">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/currency_main1.png" format="PNG"
+            <imagedata fileref="figures/currency_main1.png"
                        srccredit="Geert Janssens" />
           </imageobject>
 
@@ -215,7 +215,7 @@ TODO -->
       <screenshot id="currency_main1a">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/currency_main1.png" format="PNG"
+            <imagedata fileref="figures/currency_main1.png"
                        srccredit="Geert Janssens" />
           </imageobject>
 
@@ -248,7 +248,7 @@ TODO -->
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/currency_peditor.png"
-                         format="PNG" srccredit="Geert Janssens" />
+                         srccredit="Geert Janssens" />
             </imageobject>
 
             <textobject>
@@ -269,7 +269,7 @@ TODO -->
         <screenshot id="currency_addcurr">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/currency_addcurr.png" format="PNG"
+              <imagedata fileref="figures/currency_addcurr.png"
                          srccredit="Geert Janssens" />
             </imageobject>
 
@@ -294,7 +294,7 @@ TODO -->
         <screenshot id="currency_manualpriceadded">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/currency_BeforeGetOnlineQuotes.png" format="PNG"
+              <imagedata fileref="figures/currency_BeforeGetOnlineQuotes.png"
                          srccredit="Geert Janssens" />
             </imageobject>
 
@@ -312,7 +312,7 @@ TODO -->
         <screenshot id="currency_main2">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/currency_main2.png" format="PNG"
+              <imagedata fileref="figures/currency_main2.png"
                          srccredit="Geert Janssens" />
             </imageobject>
 
@@ -349,7 +349,7 @@ TODO -->
         <screenshot id="currency_BeforeGetOnline">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/currency_BeforeGetOnlineQuotes.png" format="PNG"
+              <imagedata fileref="figures/currency_BeforeGetOnlineQuotes.png"
                          srccredit="Geert Janssens" />
             </imageobject>
 
@@ -380,7 +380,7 @@ TODO -->
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/currency_AfterGetOnlineQuotes.png"
-                           format="PNG" srccredit="Geert Janssens" />
+                           srccredit="Geert Janssens" />
               </imageobject>
 
               <textobject>
@@ -409,7 +409,7 @@ TODO -->
         <screenshot id="currency_main3.png">
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/currency_main3.png" format="PNG"
+              <imagedata fileref="figures/currency_main3.png"
                          srccredit="Geert Janssens" />
             </imageobject>
 
@@ -523,7 +523,7 @@ TODO -->
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/currency_purchase_MoveMoney.png"
-                         format="PNG" srccredit="Bengt Thuree" />
+                         srccredit="Bengt Thuree" />
             </imageobject>
 
             <textobject>
@@ -545,7 +545,7 @@ TODO -->
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/currency_purchase_SetExchangeRate.png"
-                         format="PNG" srccredit="Bengt Thuree" />
+                         srccredit="Bengt Thuree" />
             </imageobject>
 
             <textobject>
@@ -568,7 +568,7 @@ TODO -->
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/currency_purchase_BeforeBoat.png"
-                         format="PNG" srccredit="Bengt Thuree" />
+                         srccredit="Bengt Thuree" />
             </imageobject>
 
             <textobject>
@@ -592,7 +592,7 @@ TODO -->
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/currency_purchase_AfterBoat.png"
-                         format="PNG" srccredit="Bengt Thuree" />
+                         srccredit="Bengt Thuree" />
             </imageobject>
 
             <textobject>
@@ -643,7 +643,7 @@ Income:Investments:Dividend:Boom:0694.HK (HKD)</screen>
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/currency_purchase_BeforeStocks.png"
-                         format="PNG" srccredit="Bengt Thuree" />
+                         srccredit="Bengt Thuree" />
             </imageobject>
 
             <textobject>
@@ -668,7 +668,7 @@ Income:Investments:Dividend:Boom:0694.HK (HKD)</screen>
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/currency_purchase_Commodities.png"
-                         format="PNG" srccredit="Bengt Thuree" />
+                         srccredit="Bengt Thuree" />
             </imageobject>
 
             <textobject>
@@ -765,7 +765,7 @@ Income:Investments:Dividend:Boom:0694.HK (HKD)</screen>
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/currency_purchase_ToAmount.png"
-                         format="PNG" srccredit="Bengt Thuree" />
+                         srccredit="Bengt Thuree" />
             </imageobject>
 
             <textobject>
@@ -787,7 +787,7 @@ Income:Investments:Dividend:Boom:0694.HK (HKD)</screen>
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/currency_purchase_AfterStocks.png"
-                         format="PNG" srccredit="Bengt Thuree" />
+                         srccredit="Bengt Thuree" />
             </imageobject>
 
             <textobject>
@@ -1134,12 +1134,12 @@ Trading
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/currency_trading_acct_setup.png"
-                format="PNG" srccredit="David Cousens" width="510"/>
+                srccredit="David Cousens" width="510"/>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/currency_trading_acct_setup.png"
-                format="PNG" srccredit="David Cousens"/>
+                srccredit="David Cousens"/>
             </imageobject>
 
             <textobject>
@@ -1165,12 +1165,12 @@ Trading
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/currency_trading_Price_Database_initial.png"
-                format="PNG" srccredit="David Cousens" width="510"/>
+                srccredit="David Cousens" width="510"/>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/currency_trading_Price_Database_initial.png"
-                format="PNG" srccredit="David Cousens"/>
+                srccredit="David Cousens"/>
             </imageobject>
 
             <textobject>
@@ -1192,12 +1192,12 @@ Trading
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/currency_trading_acct_setup_2.png"
-                format="PNG" srccredit="David Cousens" width="510"/>
+                srccredit="David Cousens" width="510"/>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/currency_trading_acct_setup_2.png"
-                format="PNG" srccredit="David Cousens"/>
+                srccredit="David Cousens"/>
             </imageobject>
 
             <textobject>
@@ -1228,12 +1228,12 @@ Trading
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/currency_trading_transfer_funds.png"
-                format="PNG" srccredit="David Cousens" width="510"/>
+                srccredit="David Cousens" width="510"/>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/currency_trading_transfer_funds.png"
-                format="PNG" srccredit="David Cousens"/>
+                srccredit="David Cousens"/>
             </imageobject>
 
             <textobject>
@@ -1265,12 +1265,12 @@ Trading
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/currency_trading_transfer_trans1.png"
-                format="PNG" srccredit="David Cousens"  width="510"/>
+                srccredit="David Cousens"  width="510"/>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/currency_trading_transfer_trans1.png"
-                format="PNG" srccredit="David Cousens"/>
+                srccredit="David Cousens"/>
             </imageobject>
 
             <textobject>
@@ -1293,12 +1293,12 @@ Trading
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/currency_trading_transfer_trans2.png"
-                format="PNG" srccredit="David Cousens"  width="510"/>
+                srccredit="David Cousens"  width="510"/>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/currency_trading_transfer_trans2.png"
-                format="PNG" srccredit="David Cousens"/>
+                srccredit="David Cousens"/>
             </imageobject>
 
             <textobject>
@@ -1320,12 +1320,12 @@ Trading
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/currency_trading_accts_after_tfr.png"
-                format="PNG" srccredit="David Cousens" width="510"/>
+                srccredit="David Cousens" width="510"/>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/currency_trading_accts_after_tfr.png"
-                format="PNG" srccredit="David Cousens"/>
+                srccredit="David Cousens"/>
             </imageobject>
 
             <textobject>
@@ -1367,13 +1367,13 @@ Trading
         <screenshot id="currency_trading_tfr_back">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/currency_trading_trf_back.png" format="PNG"
+              <imagedata fileref="figures/currency_trading_trf_back.png"
                          srccredit="David Cousens"  width="510"/>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/currency_trading_trf_back.png"
-                format="PNG" srccredit="David Cousens"/>
+                srccredit="David Cousens"/>
             </imageobject>
 
             <textobject>
@@ -1395,12 +1395,12 @@ Trading
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/currency_trading_prices_after_trf_back.png"
-                format="PNG" srccredit="David Cousens" width="510"/>
+                srccredit="David Cousens" width="510"/>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/currency_trading_prices_after_trf_back.png"
-                format="PNG" srccredit="David Cousens"/>
+                srccredit="David Cousens"/>
             </imageobject>
 
             <textobject>
@@ -1421,12 +1421,12 @@ Trading
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/currency_trading_accts_after_trf_back.png"
-                format="PNG" srccredit="David Cousens" width="510"/>
+                srccredit="David Cousens" width="510"/>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/currency_trading_accts_after_trf_back.png"
-                format="PNG" srccredit="David Cousens"/>
+                srccredit="David Cousens"/>
             </imageobject>
 
             <textobject>
@@ -1460,12 +1460,12 @@ Trading
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/currency_trading_balance_sheet.png"
-                format="PNG" srccredit="David Cousens" width="510"/>
+                srccredit="David Cousens" width="510"/>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/currency_trading_balance_sheet.png"
-                format="PNG" srccredit="David Cousens"/>
+                srccredit="David Cousens"/>
             </imageobject>
 
             <textobject>
diff --git a/guide/ru/ch_dep.xml b/guide/ru/ch_dep.xml
index abce03d7..83d2d05a 100644
--- a/guide/ru/ch_dep.xml
+++ b/guide/ru/ch_dep.xml
@@ -651,7 +651,7 @@
     <screenshot id="dep_example">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/dep_example.png" format="PNG"
+          <imagedata fileref="figures/dep_example.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -684,7 +684,7 @@
     <screenshot id="dep_assetreg">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/dep_assetreg.png" format="PNG"
+          <imagedata fileref="figures/dep_assetreg.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -702,7 +702,7 @@
     <screenshot id="dep_assetmain">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/dep_assetmain.png" format="PNG"
+          <imagedata fileref="figures/dep_assetmain.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
diff --git a/guide/ru/ch_invest.xml b/guide/ru/ch_invest.xml
index 5bd0caa3..63b6d10d 100644
--- a/guide/ru/ch_invest.xml
+++ b/guide/ru/ch_invest.xml
@@ -331,12 +331,12 @@
       <screenshot id="invest_accountspredef">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_AccountsPredef.png" format="PNG"
+            <imagedata fileref="figures/invest_AccountsPredef.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_AccountsPredef.png" format="PNG"
+            <imagedata fileref="figures/invest_AccountsPredef.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -506,12 +506,12 @@ Income
       <screenshot id="invest-int">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_int1.png" format="PNG"
+            <imagedata fileref="figures/invest_int1.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_int1.png" format="PNG"
+            <imagedata fileref="figures/invest_int1.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -536,12 +536,12 @@ Income
       <screenshot id="invest-int2">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_int2.png" format="PNG"
+            <imagedata fileref="figures/invest_int2.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_int2.png" format="PNG"
+            <imagedata fileref="figures/invest_int2.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -559,12 +559,12 @@ Income
       <screenshot id="invest-int2-1">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_int2-1.png" format="PNG"
+            <imagedata fileref="figures/invest_int2-1.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_int2-1.png" format="PNG"
+            <imagedata fileref="figures/invest_int2-1.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -585,12 +585,12 @@ Income
       <screenshot id="invest-int3">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_int3.png" format="PNG"
+            <imagedata fileref="figures/invest_int3.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_int3.png" format="PNG"
+            <imagedata fileref="figures/invest_int3.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -688,12 +688,12 @@ Income
       <screenshot id="invest-newaccount">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_newaccount.png" format="PNG"
+            <imagedata fileref="figures/invest_newaccount.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_newaccount.png" format="PNG"
+            <imagedata fileref="figures/invest_newaccount.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -771,12 +771,12 @@ Income
               <screenshot id="invest-selectsecurity">
                 <mediaobject>
                   <imageobject role="html">
-                    <imagedata fileref="figures/invest_selectsecurity.png" format="PNG"
+                    <imagedata fileref="figures/invest_selectsecurity.png"
                                 srccredit="Cristian Marchi"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
-                    <imagedata fileref="figures/invest_selectsecurity.png" format="PNG"
+                    <imagedata fileref="figures/invest_selectsecurity.png"
                                 srccredit="Cristian Marchi"></imagedata>
                   </imageobject>
 
@@ -853,12 +853,12 @@ Income
                     <screenshot id="invest-newsecurity">
                       <mediaobject>
                         <imageobject role="html">
-                          <imagedata fileref="figures/invest_newsecurity.png" format="PNG"
+                          <imagedata fileref="figures/invest_newsecurity.png"
                                      srccredit="Cristian Marchi" width="510px"></imagedata>
                         </imageobject>
 
                         <imageobject role="fo">
-                          <imagedata fileref="figures/invest_newsecurity.png" format="PNG"
+                          <imagedata fileref="figures/invest_newsecurity.png"
                                      srccredit="Cristian Marchi"></imagedata>
                         </imageobject>
 
@@ -941,12 +941,12 @@ Income
       <screenshot id="invest-setup-current">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_setup_current.png" format="PNG"
+            <imagedata fileref="figures/invest_setup_current.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_setup_current.png" format="PNG"
+            <imagedata fileref="figures/invest_setup_current.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -1003,12 +1003,12 @@ Income
       <screenshot id="invest-setup-portfolio1">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_setup_portfolio1.png" format="PNG"
+            <imagedata fileref="figures/invest_setup_portfolio1.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_setup_portfolio1.png" format="PNG"
+            <imagedata fileref="figures/invest_setup_portfolio1.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -1110,12 +1110,12 @@ Income
         <screenshot id="invest-setup-portfolio2">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/invest_SetupPortfolio2.png" format="PNG"
+              <imagedata fileref="figures/invest_SetupPortfolio2.png"
                           srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/invest_SetupPortfolio2.png" format="PNG"
+              <imagedata fileref="figures/invest_SetupPortfolio2.png"
                           srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -1166,12 +1166,12 @@ Income
         <screenshot id="invest-setup-portfolio3">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/invest_SetupPortfolio3.png" format="PNG"
+              <imagedata fileref="figures/invest_SetupPortfolio3.png"
                           srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/invest_SetupPortfolio3.png" format="PNG"
+              <imagedata fileref="figures/invest_SetupPortfolio3.png"
                           srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -1283,12 +1283,12 @@ Income
       <screenshot id="invest-peditor">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_peditor.png" format="PNG"
+            <imagedata fileref="figures/invest_peditor.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_peditor.png" format="PNG"
+            <imagedata fileref="figures/invest_peditor.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -1332,12 +1332,12 @@ Income
       <screenshot id="invest-peditor2">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_peditor2.png" format="PNG"
+            <imagedata fileref="figures/invest_peditor2.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_peditor2.png" format="PNG"
+            <imagedata fileref="figures/invest_peditor2.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -1501,12 +1501,12 @@ Income
       <screenshot id="invest-stockvalue">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_stockvalue.png" format="PNG"
+            <imagedata fileref="figures/invest_stockvalue.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_stockvalue.png" format="PNG"
+            <imagedata fileref="figures/invest_stockvalue.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -1546,7 +1546,7 @@ Income
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/invest_stockvalue_report_options.png"
-                       format="PNG" srccredit="John Ralls"></imagedata>
+                       srccredit="John Ralls"></imagedata>
             </imageobject>
 
             <textobject>
@@ -1622,7 +1622,7 @@ Income
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_stockvalue_report.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -2522,12 +2522,12 @@ Income
         <screenshot id="invest-sellstockManProfComb">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/invest_sellstock.png" format="PNG"
+              <imagedata fileref="figures/invest_sellstock.png"
                           srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/invest_sellstock.png" format="PNG"
+              <imagedata fileref="figures/invest_sellstock.png"
                           srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -2559,12 +2559,12 @@ Income
         <screenshot id="invest-sellstockManProfComb2">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/invest_sellstock2.png" format="PNG"
+              <imagedata fileref="figures/invest_sellstock2.png"
                           srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/invest_sellstock2.png" format="PNG"
+              <imagedata fileref="figures/invest_sellstock2.png"
                           srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -2707,12 +2707,12 @@ Income
         <screenshot id="invest-sellstockManProfCombNet">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/invest_sellstockManProfCombNet.png" format="PNG"
+              <imagedata fileref="figures/invest_sellstockManProfCombNet.png"
                           srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/invest_sellstockManProfCombNet.png" format="PNG"
+              <imagedata fileref="figures/invest_sellstockManProfCombNet.png"
                           srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -2913,12 +2913,12 @@ Income
         <screenshot id="invest-sellstockManProfSep">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/invest_sellstockManProfSep.png" format="PNG"
+              <imagedata fileref="figures/invest_sellstockManProfSep.png"
                           srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/invest_sellstockManProfSep.png" format="PNG"
+              <imagedata fileref="figures/invest_sellstockManProfSep.png"
                           srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -3102,12 +3102,12 @@ Income
         <screenshot id="invest-sellstockManProfSepNet">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/invest_sellstockManProfSepNet.png" format="PNG"
+              <imagedata fileref="figures/invest_sellstockManProfSepNet.png"
                           srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/invest_sellstockManProfSep.png" format="PNG"
+              <imagedata fileref="figures/invest_sellstockManProfSep.png"
                           srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -3211,12 +3211,12 @@ Income
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png"
-                format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                srccredit="Chris Good" width="510px"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png"
-                           format="PNG" srccredit="Chris Good"></imagedata>
+                           srccredit="Chris Good"></imagedata>
               </imageobject>
 
               <textobject>
@@ -3579,12 +3579,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                     <imagedata fileref="figures/investLots0_RegB4Scrub.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
                     <imagedata fileref="figures/investLots0_RegB4Scrub.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -3621,12 +3621,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                     <imagedata fileref="figures/investLots1_BeforeCreateLot.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
                     <imagedata fileref="figures/investLots1_BeforeCreateLot.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -3693,12 +3693,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                     <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
                     <imagedata fileref="figures/investLots2_BeforeScrub1Lot.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -3735,12 +3735,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                     <imagedata fileref="figures/investLots2_RegAfterScrub1Lot.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
                     <imagedata fileref="figures/investLots2_RegAfterScrub1Lot.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -3842,12 +3842,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/invest2Lots0RegB4Scrub.png"
-                format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                srccredit="Chris Good" width="510px"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/invest2Lots0RegB4Scrub.png"
-                           format="PNG" srccredit="Chris Good"></imagedata>
+                           srccredit="Chris Good"></imagedata>
               </imageobject>
 
               <textobject>
@@ -3877,12 +3877,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                     <imagedata fileref="figures/invest2Lots1B4Scrub.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
                     <imagedata fileref="figures/invest2Lots1B4Scrub.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -3908,12 +3908,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                     <imagedata fileref="figures/invest2Lots2LotsAftScrubAcct.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
                     <imagedata fileref="figures/invest2Lots2LotsAftScrubAcct.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -3946,12 +3946,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                     <imagedata fileref="figures/invest2Lots3RegAftScrubAcct.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
                     <imagedata fileref="figures/invest2Lots3RegAftScrubAcct.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -3996,12 +3996,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/investLotsSplitReg.png"
-                format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                srccredit="Chris Good" width="510px"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/investLotsSplitReg.png"
-                           format="PNG" srccredit="Chris Good"></imagedata>
+                           srccredit="Chris Good"></imagedata>
               </imageobject>
 
               <textobject>
@@ -4021,12 +4021,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/investLotsSplitLot0.png"
-                format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                srccredit="Chris Good" width="510px"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/investLotsSplitLot0.png"
-                           format="PNG" srccredit="Chris Good"></imagedata>
+                           srccredit="Chris Good"></imagedata>
               </imageobject>
 
               <textobject>
@@ -4046,12 +4046,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/investLotsSplitLot1.png"
-                format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                srccredit="Chris Good" width="510px"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/investLotsSplitLot1.png"
-                           format="PNG" srccredit="Chris Good"></imagedata>
+                           srccredit="Chris Good"></imagedata>
               </imageobject>
 
               <textobject>
@@ -4109,12 +4109,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
                 <mediaobject>
                   <imageobject role="html">
                     <imagedata fileref="figures/investLots2_RegAfterScrub1Lot.png"
-                    format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                    srccredit="Chris Good" width="510px"></imagedata>
                   </imageobject>
 
                   <imageobject role="fo">
                     <imagedata fileref="figures/investLots2_RegAfterScrub1Lot.png"
-                               format="PNG" srccredit="Chris Good"></imagedata>
+                               srccredit="Chris Good"></imagedata>
                   </imageobject>
 
                   <textobject>
@@ -4175,12 +4175,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject role="html">
             <imagedata fileref="figures/invest_dividendcash.png"
-                       format="PNG" srccredit="Daniel Dodson" width="510px"></imagedata>
+                       srccredit="Daniel Dodson" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
             <imagedata fileref="figures/invest_dividendcash.png"
-                       format="PNG" srccredit="Daniel Dodson"></imagedata>
+                       srccredit="Daniel Dodson"></imagedata>
           </imageobject>
 
           <textobject>
@@ -4226,12 +4226,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
       <screenshot id="invest-dividendreinvest1">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/invest_dividendreinvest1.png" format="PNG"
+            <imagedata fileref="figures/invest_dividendreinvest1.png"
                         srccredit="Cristian Marchi" width="510px"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/invest_dividendreinvest1.png" format="PNG"
+            <imagedata fileref="figures/invest_dividendreinvest1.png"
                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -4302,12 +4302,12 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
     <screenshot id="invest-ret-of-cap">
       <mediaobject>
         <imageobject role="html">
-          <imagedata fileref="figures/invest_ret_of_cap.png" format="PNG"
+          <imagedata fileref="figures/invest_ret_of_cap.png"
                       srccredit="Chris Good" width="510px"></imagedata>
         </imageobject>
 
         <imageobject role="fo">
-          <imagedata fileref="figures/invest_ret_of_cap.png" format="PNG"
+          <imagedata fileref="figures/invest_ret_of_cap.png"
                       srccredit="Chris Good"></imagedata>
         </imageobject>
 
@@ -4366,7 +4366,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_split1.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -4389,7 +4389,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_split2.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -4452,7 +4452,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_split3.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -4473,7 +4473,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_split4.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -4496,7 +4496,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_simplesplit1.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -4540,7 +4540,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_merge2.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -4606,7 +4606,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_merge3.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
@@ -4632,7 +4632,7 @@ url="https://www.gnucash.org/docs/v&series-stable;/C/gnucash-help/tool-lots.html
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/invest_stockmerge1.png"
-                       format="PNG" srccredit="Dave Herman"></imagedata>
+                       srccredit="Dave Herman"></imagedata>
           </imageobject>
 
           <textobject>
diff --git a/guide/ru/ch_loans.xml b/guide/ru/ch_loans.xml
index 458023a5..e14af83e 100644
--- a/guide/ru/ch_loans.xml
+++ b/guide/ru/ch_loans.xml
@@ -163,7 +163,7 @@
     <screenshot id="loans_fcalc">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/loans_fcalc.png" format="PNG"
+          <imagedata fileref="figures/loans_fcalc.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -411,7 +411,7 @@ The simple case for when  PMT == 0 gives the solution:
     <screenshot id="loans_mortgage">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/loans_mortgage1.png" format="PNG"
+          <imagedata fileref="figures/loans_mortgage1.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -509,7 +509,7 @@ The simple case for when  PMT == 0 gives the solution:
     <screenshot id="loans_mortgage2.png">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/loans_mortgage2.png" format="PNG"
+          <imagedata fileref="figures/loans_mortgage2.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -530,7 +530,7 @@ The simple case for when  PMT == 0 gives the solution:
     <screenshot id="loans_mortgage3">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/loans_mortgage3.png" format="PNG"
+          <imagedata fileref="figures/loans_mortgage3.png"
                      srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -620,7 +620,7 @@ The simple case for when  PMT == 0 gives the solution:
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanCalculation.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -708,7 +708,7 @@ Equity:Opening Balances:USD</screen>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanInitial.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -764,7 +764,7 @@ Equity:Opening Balances:USD</screen>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanFirstPayment.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -823,7 +823,7 @@ Equity:Opening Balances:USD</screen>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanSecondPayment.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -847,7 +847,7 @@ Equity:Opening Balances:USD</screen>
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/loans_PrivateLoanSecondPaymentAccounts.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
diff --git a/guide/ru/ch_oview.xml b/guide/ru/ch_oview.xml
index 263815d5..40b4b3c7 100644
--- a/guide/ru/ch_oview.xml
+++ b/guide/ru/ch_oview.xml
@@ -54,12 +54,12 @@
     <screenshot id="oview-intro">
       <mediaobject>
         <imageobject role="html">
-          <imagedata fileref="figures/oview_intro.png" format="PNG"
+          <imagedata fileref="figures/oview_intro.png"
                      srccredit="Bengt Thuree" width="510"></imagedata>
         </imageobject>
 
         <imageobject role="fo">
-          <imagedata fileref="figures/oview_intro.png" format="PNG"
+          <imagedata fileref="figures/oview_intro.png"
                      srccredit="Bengt Thuree"></imagedata>
         </imageobject>
 
diff --git a/guide/ru/ch_txns.xml b/guide/ru/ch_txns.xml
index 8e25a107..12bc9f15 100644
--- a/guide/ru/ch_txns.xml
+++ b/guide/ru/ch_txns.xml
@@ -135,7 +135,7 @@
       <screenshot id="txns-registersplit4">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_registersplit4.png" format="PNG"
+            <imagedata fileref="figures/txns_registersplit4.png"
                 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -156,7 +156,7 @@
       <screenshot id="txns-registersplit5">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_registersplit5.png" format="PNG"
+            <imagedata fileref="figures/txns_registersplit5.png"
                 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -183,7 +183,7 @@
       <screenshot id="txns-registersplit6">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_registersplit6.png" format="PNG"
+            <imagedata fileref="figures/txns_registersplit6.png"
                 srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -445,7 +445,7 @@
     <screenshot id="txns-registersplit2">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/txns_registersplit2.png" format="PNG"
+          <imagedata fileref="figures/txns_registersplit2.png"
             srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -487,7 +487,7 @@
     <screenshot id="txns-registersplit3">
       <mediaobject>
         <imageobject>
-          <imagedata fileref="figures/txns_registersplit3.png" format="PNG"
+          <imagedata fileref="figures/txns_registersplit3.png"
             srccredit="Bengt Thuree" />
         </imageobject>
 
@@ -529,7 +529,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_register_2account.png"
-                       format="PNG" srccredit="Bengt  Thuree" />
+                       srccredit="Bengt  Thuree" />
           </imageobject>
 
           <textobject>
@@ -559,7 +559,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_register_2account2.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -633,7 +633,7 @@
         <title>Entering a split transaction</title><mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_register_multiaccount.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -722,12 +722,12 @@
         <mediaobject>
           <imageobject role="html">
             <imagedata fileref="figures/txns_reconcile_window1.png"
-                         format="PNG" srccredit="Cristian Marchi"></imagedata>
+                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
             <imagedata fileref="figures/txns_reconcile_window1.png"
-                         format="PNG" srccredit="Cristian Marchi"></imagedata>
+                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
           <textobject>
@@ -863,12 +863,12 @@
         <mediaobject>
           <imageobject role="html">
             <imagedata fileref="figures/txns_reconcile_window2.png"
-                         format="PNG" srccredit="Cristian Marchi" width="510"></imagedata>
+                         srccredit="Cristian Marchi" width="510"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
             <imagedata fileref="figures/txns_reconcile_window2.png"
-                         format="PNG" srccredit="Cristian Marchi"></imagedata>
+                         srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
           <textobject>
@@ -984,7 +984,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_reconcile_window3.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -1030,7 +1030,7 @@
       <screenshot id="txns-sxn-ledger-1">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_sxn_ledger1.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_ledger1.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -1057,7 +1057,7 @@
       <screenshot id="txns-sxn-ledger-2">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_sxn_ledger2.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_ledger2.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -1078,7 +1078,7 @@
       <screenshot id="txns-sxn-ledger-3">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_sxn_ledger3.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_ledger3.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -1100,7 +1100,7 @@
       <screenshot id="txns-sxn-ledger-4">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_sxn_ledger4.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_ledger4.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -1141,12 +1141,12 @@
       <screenshot id="txns-sxn-editor-2">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor-2.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-2.png"
                        srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor-2.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-2.png"
                        srccredit="Cristian Marchi"/>
           </imageobject>
 
@@ -1169,12 +1169,12 @@
       <screenshot id="txns-sxn-editor-3-overview">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor-3-overview.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-overview.png"
                        srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor-3-overview.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-overview.png"
                        srccredit="Cristian Marchi" />
           </imageobject>
 
@@ -1257,12 +1257,12 @@
       <screenshot id="txns-sxn-editor-3-frequency">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor-3-frequency.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-frequency.png"
                        srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor-3-frequency.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-frequency.png"
                        srccredit="Cristian Marchi" />
           </imageobject>
 
@@ -1354,12 +1354,12 @@
       <screenshot id="txns-sxn-editor-3-template">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor-3-template.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-template.png"
                        srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor-3-template.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-3-template.png"
                        srccredit="Cristian Marchi" />
           </imageobject>
 
@@ -1386,12 +1386,12 @@
       <screenshot id="txns-sxn-editor-4">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor-4.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-4.png"
                        srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor-4.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor-4.png"
                        srccredit="Cristian Marchi" />
           </imageobject>
 
@@ -1433,12 +1433,12 @@
       <screenshot id="txns-sxn-editor-slr">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/txns_sxn_editor_slr.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor_slr.png"
                        srccredit="Cristian Marchi" width="510"/>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/txns_sxn_editor_slr.png" format="PNG"
+            <imagedata fileref="figures/txns_sxn_editor_slr.png"
                        srccredit="Cristian Marchi" />
           </imageobject>
 
@@ -1503,7 +1503,7 @@
       <screenshot id="txns-puttoget1-Charts">
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/txns_puttoget_Charts.png" format="PNG"
+            <imagedata fileref="figures/txns_puttoget_Charts.png"
                        srccredit="Bengt Thuree" />
           </imageobject>
 
@@ -1576,7 +1576,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_puttoget_Charts1.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -1696,7 +1696,7 @@
         <mediaobject>
           <imageobject>
             <imagedata fileref="figures/txns_puttoget_Charts2.png"
-                       format="PNG" srccredit="Bengt Thuree" />
+                       srccredit="Bengt Thuree" />
           </imageobject>
 
           <textobject>
@@ -1751,7 +1751,7 @@
           <screenshot id="txns-puttoget2-Cash">
             <mediaobject>
               <imageobject>
-                <imagedata fileref="figures/txns_CashFlow.png" format="PNG"
+                <imagedata fileref="figures/txns_CashFlow.png"
                            srccredit="Bengt Thuree" />
               </imageobject>
 
@@ -1788,7 +1788,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/txns_TransactionRptChecking.png"
-                           format="PNG" srccredit="Bengt Thuree" />
+                           srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
@@ -1811,7 +1811,7 @@
             <mediaobject>
               <imageobject>
                 <imagedata fileref="figures/txns_TransactionRptExpenses.png"
-                           format="PNG" srccredit="Bengt Thuree" />
+                           srccredit="Bengt Thuree" />
               </imageobject>
 
               <textobject>
diff --git a/manual/C/Help_ch_Customize.xml b/manual/C/Help_ch_Customize.xml
index 602ed63a..7b423a3e 100755
--- a/manual/C/Help_ch_Customize.xml
+++ b/manual/C/Help_ch_Customize.xml
@@ -98,12 +98,12 @@ Translators:
         <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>Accounting Period</guilabel> tab</title><screenshot id="Prefer_Accounting-Period">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_Pref_AccntPeriod.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_AccntPeriod.png"
                          srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_AccntPeriod.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_AccntPeriod.png"
                          srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -180,12 +180,12 @@ Translators:
         <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>Accounts</guilabel> tab</title><screenshot id="Prefer_Accounts">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_Pref_Accnts.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Accnts.png"
                          srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_Accnts.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Accnts.png"
                          srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -275,12 +275,12 @@ Translators:
         <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>Business</guilabel> tab</title><screenshot id="Prefer_Business">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_Pref_Business.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Business.png"
                          srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_Business.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Business.png"
                          srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -393,12 +393,12 @@ Translators:
         <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>General</guilabel> tab</title><screenshot id="Prefer_General">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_Pref_General.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_General.png"
                          srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_General.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_General.png"
                          srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -530,11 +530,11 @@ Translators:
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Pref_Import.png"
-                         format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                         srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_Import.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Import.png"
                          srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -656,12 +656,12 @@ Translators:
         <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>Numbers, Date, Time</guilabel> tab</title><screenshot id="Prefer_DateTime">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_Pref_DateTime.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_DateTime.png"
                          srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_DateTime.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_DateTime.png"
                          srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -779,11 +779,11 @@ Translators:
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Pref_OnlineBanking.png"
-                         format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                         srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_OnlineBanking.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_OnlineBanking.png"
                          srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -832,11 +832,11 @@ Translators:
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Pref_Quotes.png"
-                         format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                         srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_Quotes.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Quotes.png"
                          srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -882,11 +882,11 @@ Translators:
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Pref_Printing.png"
-                         format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                         srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_Printing.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Printing.png"
                          srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -926,11 +926,11 @@ Translators:
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Pref_Register.png"
-                         format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                         srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_Register.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Register.png"
                          srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -1025,11 +1025,11 @@ Translators:
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Pref_RegisterDefaults.png"
-                         format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                         srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_RegisterDefaults.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_RegisterDefaults.png"
                          srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -1113,11 +1113,11 @@ Translators:
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Pref_Reports.png"
-                         format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                         srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_Reports.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Reports.png"
                          srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -1172,11 +1172,11 @@ Translators:
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Pref_Sched.png"
-                         format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                         srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_Sched.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Sched.png"
                          srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -1249,11 +1249,11 @@ Translators:
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Pref_Windows.png"
-                         format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                         srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_Windows.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Windows.png"
                          srccredit="Chris Good"></imagedata>
             </imageobject>
 
@@ -1369,7 +1369,7 @@ Translators:
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/Help_Book_Options_Accounts.png"
-                         format="PNG" srccredit="Frank H. Ellenberger"></imagedata>
+                         srccredit="Frank H. Ellenberger"></imagedata>
             </imageobject>
           </mediaobject>
         </screenshot>
@@ -1466,7 +1466,7 @@ Translators:
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/Help_Book_Options_Budgeting.png"
-                         format="PNG" srccredit="Frank H. Ellenberger"></imagedata>
+                         srccredit="Frank H. Ellenberger"></imagedata>
             </imageobject>
           </mediaobject>
         </screenshot>
@@ -1484,7 +1484,7 @@ Translators:
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/Help_Book_Options_Business.png"
-                         format="PNG" srccredit="Frank H. Ellenberger"></imagedata>
+                         srccredit="Frank H. Ellenberger"></imagedata>
             </imageobject>
           </mediaobject>
         </screenshot>
@@ -1590,7 +1590,7 @@ Translators:
           <mediaobject>
             <imageobject>
               <imagedata fileref="figures/Help_Book_Options_Counters.png"
-                         format="PNG" srccredit="Frank H. Ellenberger"></imagedata>
+                         srccredit="Frank H. Ellenberger"></imagedata>
             </imageobject>
           </mediaobject>
         </screenshot>
diff --git a/manual/C/Help_ch_GUIMenus.xml b/manual/C/Help_ch_GUIMenus.xml
index e4c8a0db..62b6bff9 100644
--- a/manual/C/Help_ch_GUIMenus.xml
+++ b/manual/C/Help_ch_GUIMenus.xml
@@ -45,12 +45,12 @@
       <figure id="Help_Main_WindowCallouts">
         <title>The Main &app; Window</title><mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/Main-window-callouts.png" format="PNG"
+            <imagedata fileref="figures/Main-window-callouts.png"
                        srccredit="Frank H. Ellenberger" width="510" />
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/Main-window-callouts.png" format="PNG"
+            <imagedata fileref="figures/Main-window-callouts.png"
                        srccredit="Frank H. Ellenberger" width="510" />
           </imageobject>
 
@@ -173,12 +173,12 @@
       <title>The <emphasis>Account Tree</emphasis> Display.</title><screenshot id="AccTree_Screen">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/Help_AccountTree_Screen.png" format="PNG"
+            <imagedata fileref="figures/Help_AccountTree_Screen.png"
                        srccredit="Cristian Marchi" width="510"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/Help_AccountTree_Screen.png" format="PNG"
+            <imagedata fileref="figures/Help_AccountTree_Screen.png"
                        srccredit="Cristian Marchi"></imagedata>
           </imageobject>
 
@@ -3239,12 +3239,12 @@
         <title>The <emphasis>Account Register</emphasis> Display.</title><screenshot id="AccountReg_Screen">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_AccountReg_Screen.png" format="PNG"
+              <imagedata fileref="figures/Help_AccountReg_Screen.png"
                        srccredit="Cristian Marchi" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_AccountReg_Screen.png" format="PNG"
+              <imagedata fileref="figures/Help_AccountReg_Screen.png"
                        srccredit="Cristian Marchi"></imagedata>
             </imageobject>
 
@@ -4352,12 +4352,12 @@ url="&url-docs-C;guide/chapter_txns.html#txns-columnwidths1">Setting
         <title>The <emphasis>Report Window</emphasis></title><screenshot id="Report_Screen">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_Report_Screen.png" format="PNG"
+              <imagedata fileref="figures/Help_Report_Screen.png"
                        srccredit="Cristian Marchi" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Report_Screen.png" format="PNG"
+              <imagedata fileref="figures/Help_Report_Screen.png"
                        srccredit="Cristian Marchi"></imagedata>
             </imageobject>
 
diff --git a/manual/C/Help_ch_GettingStarted.xml b/manual/C/Help_ch_GettingStarted.xml
index a4c907ec..8e7fe928 100644
--- a/manual/C/Help_ch_GettingStarted.xml
+++ b/manual/C/Help_ch_GettingStarted.xml
@@ -26,7 +26,7 @@ Translators:
       <title><quote>Welcome to &appname;!</quote> Screen</title><screenshot>
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/welcome.png" format="PNG"
+            <imagedata fileref="figures/welcome.png"
                    srccredit="Frank H. Ellenberger" />
           </imageobject>
         </mediaobject>
@@ -41,7 +41,7 @@ Translators:
       <title>Display Welcome Dialog Again?</title><screenshot>
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/welcome-cancel.png" format="PNG"
+            <imagedata fileref="figures/welcome-cancel.png"
                    srccredit="Frank H. Ellenberger" />
           </imageobject>
         </mediaobject>
@@ -62,7 +62,7 @@ Translators:
         <title>Minimal &app; main window</title><screenshot>
           <mediaobject>
             <imageobject>
-              <imagedata fileref="figures/window-main-empty.png" format="PNG"
+              <imagedata fileref="figures/window-main-empty.png"
                    srccredit="Frank H. Ellenberger" />
             </imageobject>
           </mediaobject>
@@ -439,7 +439,7 @@ Translators:
       <title><quote>Tip of The Day</quote> Screen</title><screenshot>
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/window-tip.png" format="PNG"
+            <imagedata fileref="figures/window-tip.png"
                    srccredit="Frank H. Ellenberger" />
           </imageobject>
         </mediaobject>
diff --git a/manual/C/Help_ch_Reports.xml b/manual/C/Help_ch_Reports.xml
index bf1febac..6ce7ef6f 100644
--- a/manual/C/Help_ch_Reports.xml
+++ b/manual/C/Help_ch_Reports.xml
@@ -417,12 +417,12 @@
             <title><emphasis>Transaction Report, Report Options</emphasis></title><screenshot id="Help_TxRptOpt_Screen">
               <mediaobject>
                 <imageobject role="html">
-                  <imagedata fileref="figures/Help_TxRptOpt_Screen.png" format="PNG"
+                  <imagedata fileref="figures/Help_TxRptOpt_Screen.png"
                      srccredit="Geert Janssens" width="510px"></imagedata>
                 </imageobject>
 
                 <imageobject role="fo">
-                  <imagedata fileref="figures/Help_TxRptOpt_Screen.png" format="PNG"
+                  <imagedata fileref="figures/Help_TxRptOpt_Screen.png"
                      srccredit="Geert Janssens"></imagedata>
                 </imageobject>
 
diff --git a/manual/C/Help_ch_Tools_Assistants.xml b/manual/C/Help_ch_Tools_Assistants.xml
index 30f6d08a..b387fb5b 100644
--- a/manual/C/Help_ch_Tools_Assistants.xml
+++ b/manual/C/Help_ch_Tools_Assistants.xml
@@ -5743,12 +5743,12 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Tool_LotsStk.png"
-              format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+              srccredit="Chris Good" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
               <imagedata fileref="figures/Help_Tool_LotsStk.png"
-                         format="PNG" srccredit="Chris Good"></imagedata>
+                         srccredit="Chris Good"></imagedata>
             </imageobject>
 
             <textobject>
@@ -5791,7 +5791,7 @@
         <para><inlinemediaobject>
             <imageobject>
               <imagedata fileref="figures/Help_Tool_Lots_h_double_arrow.png"
-                format="PNG" width="48px" />
+                width="48px" />
             </imageobject>
 
             <textobject>
@@ -5802,7 +5802,7 @@
           <inlinemediaobject>
             <imageobject>
               <imagedata fileref="figures/Help_Tool_Lots_v_double_arrow.png"
-                format="PNG" width="48px" />
+                width="48px" />
             </imageobject>
           </inlinemediaobject>
         </para>
@@ -6187,12 +6187,12 @@ url="&url-docs-C;guide/invest-sell1.html#invest-sellLots"> Automatic
             <mediaobject>
               <imageobject role="html">
                 <imagedata fileref="figures/Help_Tool_LotsBus.png"
-                format="PNG" srccredit="Chris Good" width="510px"></imagedata>
+                srccredit="Chris Good" width="510px"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
                 <imagedata fileref="figures/Help_Tool_LotsBus.png"
-                           format="PNG" srccredit="Chris Good"></imagedata>
+                           srccredit="Chris Good"></imagedata>
               </imageobject>
 
               <textobject>
diff --git a/manual/C/Help_ch_Transactions.xml b/manual/C/Help_ch_Transactions.xml
index 0572e716..e877a87d 100644
--- a/manual/C/Help_ch_Transactions.xml
+++ b/manual/C/Help_ch_Transactions.xml
@@ -405,7 +405,7 @@ Translators:
       <title>Change a Transaction Association Dialog</title><screenshot>
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/Help_Trans_Assoc_Dialog.png" format="PNG"
+            <imagedata fileref="figures/Help_Trans_Assoc_Dialog.png"
                          srccredit="Frank H. Ellenberger" />
           </imageobject>
         </mediaobject>
@@ -446,7 +446,7 @@ Translators:
       <title>Chain and Paperclip</title><screenshot>
         <mediaobject>
           <imageobject>
-            <imagedata fileref="figures/Help_Trans_Assoc_Symbols.png" format="PNG"
+            <imagedata fileref="figures/Help_Trans_Assoc_Symbols.png"
                        srccredit="Frank H. Ellenberger" />
           </imageobject>
         </mediaobject>
@@ -1363,11 +1363,11 @@ Translators:
           <title>The Import QIF Files Assistent</title><screenshot id="ImportQIFDruid">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_Import_QIF_Druid.png" format="PNG" srccredit="David Cousens" width="510"></imagedata>
+                <imagedata fileref="figures/Help_Import_QIF_Druid.png" srccredit="David Cousens" width="510"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_Import_QIF_Druid.png" format="PNG" srccredit="David Cousens"></imagedata>
+                <imagedata fileref="figures/Help_Import_QIF_Druid.png" srccredit="David Cousens"></imagedata>
               </imageobject>
             </mediaobject>
           </screenshot>
@@ -1607,11 +1607,11 @@ Translators:
         <title>The CSV Transaction Import Assistant - Introduction</title><screenshot id="CSV_Transaction_Import_Assistant">
           <mediaobject>
             <imageobject role="html">
-              <imagedata  fileref="figures/Help_CSV_Transaction_Import_Assistant.png" format="PNG" srccredit="David Cousens" width="515px"></imagedata>
+              <imagedata  fileref="figures/Help_CSV_Transaction_Import_Assistant.png" srccredit="David Cousens" width="515px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata width="515px" fileref="figures/Help_CSV_Transaction_Import_Assistant.png" format="PNG" srccredit="David Cousens"></imagedata>
+              <imagedata width="515px" fileref="figures/Help_CSV_Transaction_Import_Assistant.png" srccredit="David Cousens"></imagedata>
             </imageobject>
           </mediaobject>
         </screenshot>
@@ -1678,11 +1678,11 @@ Translators:
                   <title>The CSV Import Preview Pane</title><screenshot id="CSV_Import_Preview">
                     <mediaobject>
                       <imageobject role="html">
-                        <imagedata  fileref="figures/Help_CSV_Import_transactions_Preview.png" format="PNG" srccredit="David Cousens" width="515px"></imagedata>
+                        <imagedata  fileref="figures/Help_CSV_Import_transactions_Preview.png" srccredit="David Cousens" width="515px"></imagedata>
                       </imageobject>
 
                       <imageobject role="fo">
-                        <imagedata  fileref="figures/Help_CSV_Import_transactions_Preview.png" format="PNG" srccredit="David Cousens"></imagedata>
+                        <imagedata  fileref="figures/Help_CSV_Import_transactions_Preview.png" srccredit="David Cousens"></imagedata>
                       </imageobject>
 
                       <caption>
@@ -2104,11 +2104,11 @@ Translators:
           <title>The Generic Transaction Import Matcher Window</title><screenshot id="ImportMatcherScreenShot">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_Import_Transaction_matcher_1.png" format="PNG" srccredit="David Cousens" width="510"></imagedata>
+                <imagedata fileref="figures/Help_Import_Transaction_matcher_1.png" srccredit="David Cousens" width="510"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_Import_Transaction_matcher_1.png" format="PNG" srccredit="David Cousens"></imagedata>
+                <imagedata fileref="figures/Help_Import_Transaction_matcher_1.png" srccredit="David Cousens"></imagedata>
               </imageobject>
 
               <caption>
@@ -2738,11 +2738,11 @@ Translators:
         <title>The Match Picker Dialog</title><screenshot id="ImportMatcherPicker">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_Import_MatchPicker.png" format="PNG" srccredit="David Cousens" width="510"></imagedata>
+              <imagedata fileref="figures/Help_Import_MatchPicker.png" srccredit="David Cousens" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Import_MatchPicker.png" format="PNG" srccredit="David Cousens"></imagedata>
+              <imagedata fileref="figures/Help_Import_MatchPicker.png" srccredit="David Cousens"></imagedata>
             </imageobject>
 
             <caption>
@@ -2876,11 +2876,11 @@ Translators:
         <title>The Import Map Editor</title><screenshot>
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_Import_Map_Editor.png" format="PNG" srccredit="David Cousens" width="510"></imagedata>
+              <imagedata fileref="figures/Help_Import_Map_Editor.png" srccredit="David Cousens" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Import_Map_Editor.png" format="PNG" srccredit="David Cousens"></imagedata>
+              <imagedata fileref="figures/Help_Import_Map_Editor.png" srccredit="David Cousens"></imagedata>
             </imageobject>
 
             <caption>
@@ -3052,11 +3052,11 @@ Translators:
       <title>The Export Transactions Wizard.</title><screenshot id="export-transactions-wizard">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/Help_Choose_Export_Settings.png" format="PNG" srccredit="David Cousens" width="510"></imagedata>
+            <imagedata fileref="figures/Help_Choose_Export_Settings.png" srccredit="David Cousens" width="510"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/Help_Choose_Export_Settings.png" format="PNG" srccredit="David Cousens"></imagedata>
+            <imagedata fileref="figures/Help_Choose_Export_Settings.png" srccredit="David Cousens"></imagedata>
           </imageobject>
         </mediaobject>
       </screenshot>
diff --git a/manual/de/Help_ch_Reports.xml b/manual/de/Help_ch_Reports.xml
index 767c969d..6704508e 100644
--- a/manual/de/Help_ch_Reports.xml
+++ b/manual/de/Help_ch_Reports.xml
@@ -420,12 +420,12 @@
             <title><emphasis>Transaction Report, Report Options</emphasis></title><screenshot id="Help_TxRptOpt_Screen">
               <mediaobject>
                 <imageobject role="html">
-                  <imagedata fileref="figures/Help_TxRptOpt_Screen.png" format="PNG"
+                  <imagedata fileref="figures/Help_TxRptOpt_Screen.png"
                      srccredit="Geert Janssens" width="510px"></imagedata>
                 </imageobject>
 
                 <imageobject role="fo">
-                  <imagedata fileref="figures/Help_TxRptOpt_Screen.png" format="PNG"
+                  <imagedata fileref="figures/Help_TxRptOpt_Screen.png"
                      srccredit="Geert Janssens"></imagedata>
                 </imageobject>
 
diff --git a/manual/it/gnucash-help.xml b/manual/it/gnucash-help.xml
index 23585119..99dc561c 100644
--- a/manual/it/gnucash-help.xml
+++ b/manual/it/gnucash-help.xml
@@ -1539,11 +1539,11 @@
         <figure id="Help_Main_WindowCallouts">
           <title>La finestra principale di &app;</title><mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Main-window-callouts.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+              <imagedata fileref="figures/Main-window-callouts.png" srccredit="Cristian Marchi" width="510"/>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Main-window-callouts.png" format="PNG" srccredit="Cristian Marchi"/>
+              <imagedata fileref="figures/Main-window-callouts.png" srccredit="Cristian Marchi"/>
             </imageobject>
 
             <textobject>
@@ -1667,11 +1667,11 @@
         <title>Una visualizzazione della <emphasis>struttura ad albero dei conti</emphasis>.</title><screenshot id="AccTree_Screen">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_AccountTree_Screen.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+              <imagedata fileref="figures/Help_AccountTree_Screen.png" srccredit="Cristian Marchi" width="510"/>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_AccountTree_Screen.png" format="PNG" srccredit="Cristian Marchi"/>
+              <imagedata fileref="figures/Help_AccountTree_Screen.png" srccredit="Cristian Marchi"/>
             </imageobject>
 
             <textobject>
@@ -4388,11 +4388,11 @@
           <title>La visualizzazione del <emphasis>registro del conto</emphasis>.</title><screenshot id="AccountReg_Screen">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_AccountReg_Screen.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+                <imagedata fileref="figures/Help_AccountReg_Screen.png" srccredit="Cristian Marchi" width="510"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_AccountReg_Screen.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/Help_AccountReg_Screen.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -6274,11 +6274,11 @@
           <title>La <emphasis>finestra del resoconto</emphasis></title><screenshot id="Report_Screen">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_Report_Screen.png" format="PNG" srccredit="Cristian Marchi" width="510"/>
+                <imagedata fileref="figures/Help_Report_Screen.png" srccredit="Cristian Marchi" width="510"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_Report_Screen.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/Help_Report_Screen.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -19895,11 +19895,11 @@ ________________________________________________________________________________
           <title>Lots in Account window for Security Capital Gains</title><screenshot id="tool-lotsInAcctStk">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_Tool_LotsStk.png" format="PNG" srccredit="Chris Good" width="510px"/>
+                <imagedata fileref="figures/Help_Tool_LotsStk.png" srccredit="Chris Good" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_Tool_LotsStk.png" format="PNG" srccredit="Chris Good"/>
+                <imagedata fileref="figures/Help_Tool_LotsStk.png" srccredit="Chris Good"/>
               </imageobject>
 
               <textobject>
@@ -19941,7 +19941,7 @@ ________________________________________________________________________________
 
           <para><inlinemediaobject>
               <imageobject>
-                <imagedata fileref="figures/Help_Tool_Lots_h_double_arrow.png" format="PNG" width="48px"/>
+                <imagedata fileref="figures/Help_Tool_Lots_h_double_arrow.png" width="48px"/>
               </imageobject>
 
               <textobject>
@@ -19951,7 +19951,7 @@ ________________________________________________________________________________
 
             <inlinemediaobject>
               <imageobject>
-                <imagedata fileref="figures/Help_Tool_Lots_v_double_arrow.png" format="PNG" width="48px"/>
+                <imagedata fileref="figures/Help_Tool_Lots_v_double_arrow.png" width="48px"/>
               </imageobject>
             </inlinemediaobject>
           </para>
@@ -20336,11 +20336,11 @@ ________________________________________________________________________________
             <title>Lots in Account window for business features</title><screenshot id="tool-lotsInAcctBus">
               <mediaobject>
                 <imageobject role="html">
-                  <imagedata fileref="figures/Help_Tool_LotsBus.png" format="PNG" srccredit="Chris Good" width="510px"/>
+                  <imagedata fileref="figures/Help_Tool_LotsBus.png" srccredit="Chris Good" width="510px"/>
                 </imageobject>
 
                 <imageobject role="fo">
-                  <imagedata fileref="figures/Help_Tool_LotsBus.png" format="PNG" srccredit="Chris Good"/>
+                  <imagedata fileref="figures/Help_Tool_LotsBus.png" srccredit="Chris Good"/>
                 </imageobject>
 
                 <textobject>
@@ -20808,11 +20808,11 @@ ________________________________________________________________________________
               <title><emphasis>Transaction Report, Report Options</emphasis></title><screenshot id="Help_TxRptOpt_Screen">
                 <mediaobject>
                   <imageobject role="html">
-                    <imagedata fileref="figures/Help_TxRptOpt_Screen.png" format="PNG" srccredit="Geert Janssens" width="510px"/>
+                    <imagedata fileref="figures/Help_TxRptOpt_Screen.png" srccredit="Geert Janssens" width="510px"/>
                   </imageobject>
 
                   <imageobject role="fo">
-                    <imagedata fileref="figures/Help_TxRptOpt_Screen.png" format="PNG" srccredit="Geert Janssens"/>
+                    <imagedata fileref="figures/Help_TxRptOpt_Screen.png" srccredit="Geert Janssens"/>
                   </imageobject>
 
                   <textobject>
@@ -23471,11 +23471,11 @@ make doc
           <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>Accounting Period</guilabel> tab</title><screenshot id="Prefer_Accounting-Period">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_Pref_AccntPeriod.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/Help_Pref_AccntPeriod.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_Pref_AccntPeriod.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/Help_Pref_AccntPeriod.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -23555,11 +23555,11 @@ make doc
           <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>Accounts</guilabel> tab</title><screenshot id="Prefer_Accounts">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_Pref_Accnts.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/Help_Pref_Accnts.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_Pref_Accnts.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/Help_Pref_Accnts.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -23663,11 +23663,11 @@ make doc
           <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>Business</guilabel> tab</title><screenshot id="Prefer_Business">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_Pref_Business.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/Help_Pref_Business.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_Pref_Business.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/Help_Pref_Business.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -23786,11 +23786,11 @@ make doc
           <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>Date/Time</guilabel> tab</title><screenshot id="Prefer_DateTime">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_Pref_DateTime.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/Help_Pref_DateTime.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_Pref_DateTime.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/Help_Pref_DateTime.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -23877,11 +23877,11 @@ make doc
           <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>General</guilabel> tab</title><screenshot id="Prefer_General">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_Pref_General.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/Help_Pref_General.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_Pref_General.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/Help_Pref_General.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -24061,11 +24061,11 @@ make doc
           <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>Online Banking</guilabel> tab</title><screenshot id="Prefer_OnlineBanking">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_Pref_OnlineBanking.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/Help_Pref_OnlineBanking.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_Pref_OnlineBanking.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/Help_Pref_OnlineBanking.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -24224,11 +24224,11 @@ make doc
           <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>Printing</guilabel> tab</title><screenshot id="Prefer_Printing">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_Pref_Printing.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/Help_Pref_Printing.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_Pref_Printing.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/Help_Pref_Printing.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -24271,11 +24271,11 @@ make doc
           <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>Register</guilabel> tab</title><screenshot id="Prefer_Register">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_Pref_Register.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/Help_Pref_Register.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_Pref_Register.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/Help_Pref_Register.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -24390,11 +24390,11 @@ make doc
           <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>Register Defaults</guilabel> tab</title><screenshot id="Prefer_RegisterDefaults">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_Pref_RegisterDefaults.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/Help_Pref_RegisterDefaults.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_Pref_RegisterDefaults.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/Help_Pref_RegisterDefaults.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -24481,11 +24481,11 @@ make doc
           <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>Reports</guilabel> tab</title><screenshot id="Prefer_Reports">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_Pref_Reports.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/Help_Pref_Reports.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_Pref_Reports.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/Help_Pref_Reports.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -24540,11 +24540,11 @@ make doc
           <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>Scheduled Transactions</guilabel> tab</title><screenshot id="Prefer_ScheduledTransactions">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_Pref_Sched.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/Help_Pref_Sched.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_Pref_Sched.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/Help_Pref_Sched.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
@@ -24610,11 +24610,11 @@ make doc
           <title>The <guimenuitem>Preferences</guimenuitem> window, <guilabel>Windows</guilabel> tab</title><screenshot id="Prefer_Windows">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_Pref_Windows.png" format="PNG" srccredit="Cristian Marchi" width="510px"/>
+                <imagedata fileref="figures/Help_Pref_Windows.png" srccredit="Cristian Marchi" width="510px"/>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_Pref_Windows.png" format="PNG" srccredit="Cristian Marchi"/>
+                <imagedata fileref="figures/Help_Pref_Windows.png" srccredit="Cristian Marchi"/>
               </imageobject>
 
               <textobject>
diff --git a/manual/pt/Help_ch_Customize.xml b/manual/pt/Help_ch_Customize.xml
index b6858bdb..87676a4d 100644
--- a/manual/pt/Help_ch_Customize.xml
+++ b/manual/pt/Help_ch_Customize.xml
@@ -100,12 +100,12 @@
         <title>O separador <guilabel>Preferências — Contas</guilabel></title><screenshot id="Prefer_Accounts">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_Pref_Accnts.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Accnts.png"
                          srccredit="Pedro Albuquerque" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_Accnts.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Accnts.png"
                          srccredit="Pedro Albuquerque"></imagedata>
             </imageobject>
 
@@ -211,12 +211,12 @@
         <title>O separador <guilabel>Preferências — Data/Hora</guilabel></title><screenshot id="Prefer_DateTime">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_Pref_DateTime.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_DateTime.png"
                          srccredit="Pedro Albuquerque" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_DateTime.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_DateTime.png"
                          srccredit="Pedro Albuquerque"></imagedata>
             </imageobject>
 
@@ -305,11 +305,11 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Pref_Register.png"
-                         format="PNG" srccredit="Pedro Albuquerque" width="510px"></imagedata>
+                         srccredit="Pedro Albuquerque" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_Register.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Register.png"
                          srccredit="Pedro Albuquerque"></imagedata>
             </imageobject>
 
@@ -427,12 +427,12 @@
         <title>O separador <guilabel>Preferências — Geral</guilabel></title><screenshot id="Prefer_General">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_Pref_General.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_General.png"
                          srccredit="Pedro Albuquerque" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_General.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_General.png"
                          srccredit="Pedro Albuquerque"></imagedata>
             </imageobject>
 
@@ -617,11 +617,11 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Pref_Printing.png"
-                         format="PNG" srccredit="Pedro Albuquerque" width="510px"></imagedata>
+                         srccredit="Pedro Albuquerque" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_Printing.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Printing.png"
                          srccredit="Pedro Albuquerque"></imagedata>
             </imageobject>
 
@@ -666,11 +666,11 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Pref_Windows.png"
-                         format="PNG" srccredit="Pedro Albuquerque" width="510px"></imagedata>
+                         srccredit="Pedro Albuquerque" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_Windows.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Windows.png"
                          srccredit="Pedro Albuquerque"></imagedata>
             </imageobject>
 
@@ -753,12 +753,12 @@
         <title>O separador <guilabel>Preferências — Negócios</guilabel></title><screenshot id="Prefer_Business">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_Pref_Business.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Business.png"
                          srccredit="Pedro Albuquerque" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_Business.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Business.png"
                          srccredit="Pedro Albuquerque"></imagedata>
             </imageobject>
 
@@ -883,11 +883,11 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Pref_OnlineBanking.png"
-                         format="PNG" srccredit="Pedro Albuquerque" width="510px"></imagedata>
+                         srccredit="Pedro Albuquerque" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_OnlineBanking.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_OnlineBanking.png"
                          srccredit="Pedro Albuquerque"></imagedata>
             </imageobject>
 
@@ -1048,12 +1048,12 @@
         <title>O separador <guilabel>Preferências — Período contabilístico</guilabel></title><screenshot id="Prefer_Accounting-Period">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_Pref_AccntPeriod.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_AccntPeriod.png"
                          srccredit="Pedro Albuquerque" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_AccntPeriod.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_AccntPeriod.png"
                          srccredit="Pedro Albuquerque"></imagedata>
             </imageobject>
 
@@ -1135,11 +1135,11 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Pref_RegisterDefaults.png"
-                         format="PNG" srccredit="Pedro Albuquerque" width="510px"></imagedata>
+                         srccredit="Pedro Albuquerque" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_RegisterDefaults.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_RegisterDefaults.png"
                          srccredit="Pedro Albuquerque"></imagedata>
             </imageobject>
 
@@ -1231,11 +1231,11 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Pref_Reports.png"
-                         format="PNG" srccredit="Pedro Albuquerque" width="510px"></imagedata>
+                         srccredit="Pedro Albuquerque" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_Reports.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Reports.png"
                          srccredit="Pedro Albuquerque"></imagedata>
             </imageobject>
 
@@ -1294,11 +1294,11 @@
           <mediaobject>
             <imageobject role="html">
               <imagedata fileref="figures/Help_Pref_Sched.png"
-                         format="PNG" srccredit="Pedro Albuquerque" width="510px"></imagedata>
+                         srccredit="Pedro Albuquerque" width="510px"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Pref_Sched.png" format="PNG"
+              <imagedata fileref="figures/Help_Pref_Sched.png"
                          srccredit="Pedro Albuquerque"></imagedata>
             </imageobject>
 
diff --git a/manual/pt/Help_ch_GUIMenus.xml b/manual/pt/Help_ch_GUIMenus.xml
index 379d4b97..d66ebe12 100644
--- a/manual/pt/Help_ch_GUIMenus.xml
+++ b/manual/pt/Help_ch_GUIMenus.xml
@@ -44,12 +44,12 @@
       <figure id="Help_Main_WindowCallouts">
         <title>A janela principal do &app;</title><mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/Main-window-callouts.png" format="PNG"
+            <imagedata fileref="figures/Main-window-callouts.png"
                        srccredit="Pedro Albuquerque" width="510"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/Main-window-callouts.png" format="PNG"
+            <imagedata fileref="figures/Main-window-callouts.png"
                        srccredit="Pedro Albuquerque"></imagedata>
           </imageobject>
 
@@ -179,12 +179,12 @@
       <title>O separador <emphasis>Árvore de contas</emphasis>.</title><screenshot id="AccTree_Screen">
         <mediaobject>
           <imageobject role="html">
-            <imagedata fileref="figures/Help_AccountTree_Screen.png" format="PNG"
+            <imagedata fileref="figures/Help_AccountTree_Screen.png"
                        srccredit="Pedro Albuquerque" width="510"></imagedata>
           </imageobject>
 
           <imageobject role="fo">
-            <imagedata fileref="figures/Help_AccountTree_Screen.png" format="PNG"
+            <imagedata fileref="figures/Help_AccountTree_Screen.png"
                        srccredit="Pedro Albuquerque"></imagedata>
           </imageobject>
 
@@ -2898,12 +2898,12 @@
         <title>O ecrã <emphasis>Diário de conta</emphasis>.</title><screenshot id="AccountReg_Screen">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_AccountReg_Screen.png" format="PNG"
+              <imagedata fileref="figures/Help_AccountReg_Screen.png"
                        srccredit="Pedro Albuquerque" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_AccountReg_Screen.png" format="PNG"
+              <imagedata fileref="figures/Help_AccountReg_Screen.png"
                        srccredit="Pedro Albuquerque"></imagedata>
             </imageobject>
 
@@ -4757,12 +4757,12 @@
         <title>A <emphasis>janela de relatórios</emphasis></title><screenshot id="Report_Screen">
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/Help_Report_Screen.png" format="PNG"
+              <imagedata fileref="figures/Help_Report_Screen.png"
                        srccredit="Pedro Albuquerque" width="510"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/Help_Report_Screen.png" format="PNG"
+              <imagedata fileref="figures/Help_Report_Screen.png"
                        srccredit="Pedro Albuquerque"></imagedata>
             </imageobject>
 
diff --git a/manual/pt/Help_ch_Reports.xml b/manual/pt/Help_ch_Reports.xml
index e750a1ee..f31cd233 100644
--- a/manual/pt/Help_ch_Reports.xml
+++ b/manual/pt/Help_ch_Reports.xml
@@ -107,12 +107,12 @@
           <title><emphasis>Relatório de transacções — opções</emphasis></title><screenshot id="Help_TxRptOpt_Screen">
             <mediaobject>
               <imageobject role="html">
-                <imagedata fileref="figures/Help_TxRptOpt_Screen.png" format="PNG"
+                <imagedata fileref="figures/Help_TxRptOpt_Screen.png"
                      srccredit="Pedro Albuquerque" width="510px"></imagedata>
               </imageobject>
 
               <imageobject role="fo">
-                <imagedata fileref="figures/Help_TxRptOpt_Screen.png" format="PNG"
+                <imagedata fileref="figures/Help_TxRptOpt_Screen.png"
                      srccredit="Pedro Albuquerque"></imagedata>
               </imageobject>
 
diff --git a/manual/pt/Help_ch_Transactions.xml b/manual/pt/Help_ch_Transactions.xml
index edda3f84..4c12066c 100644
--- a/manual/pt/Help_ch_Transactions.xml
+++ b/manual/pt/Help_ch_Transactions.xml
@@ -80,12 +80,12 @@ Translators:
           mostradas como sumário. O ícone
           <mediaobject>
             <imageobject role="html">
-              <imagedata fileref="figures/icons/split_transaction.png" format="PNG"
+              <imagedata fileref="figures/icons/split_transaction.png"
                        srccredit="Pedro Albuquerque" width="47"></imagedata>
             </imageobject>
 
             <imageobject role="fo">
-              <imagedata fileref="figures/split_transaction.png" format="PNG"
+              <imagedata fileref="figures/split_transaction.png"
                        srccredit="Pedro Albuquerque"></imagedata>
             </imageobject>
           </mediaobject>



Summary of changes:
 guide/C/ch_accts.xml                  |  12 +-
 guide/C/ch_basics.xml                 |  46 ++--
 guide/C/ch_bus_features.xml           |  62 ++---
 guide/C/ch_capgain.xml                |   6 +-
 guide/C/ch_cbook.xml                  |  24 +-
 guide/C/ch_cc.xml                     |  26 +-
 guide/C/ch_dep.xml                    |   6 +-
 guide/C/ch_invest.xml                 | 164 ++++++------
 guide/C/ch_loans.xml                  |  18 +-
 guide/C/ch_oview.xml                  |   4 +-
 guide/C/ch_txns.xml                   |  70 +++---
 guide/de/ch_accts.xml                 |  12 +-
 guide/de/ch_basics.xml                |  48 ++--
 guide/de/ch_bus_ap.xml                |  14 +-
 guide/de/ch_bus_ar.xml                |  24 +-
 guide/de/ch_bus_pay.xml               |   8 +-
 guide/de/ch_bus_setup.xml             |  20 +-
 guide/de/ch_capgain.xml               |   6 +-
 guide/de/ch_cbook.xml                 |  24 +-
 guide/de/ch_cc.xml                    |  26 +-
 guide/de/ch_currency.xml              |  40 +--
 guide/de/ch_dep.xml                   |   6 +-
 guide/de/ch_invest.xml                | 152 ++++++------
 guide/de/ch_loans.xml                 |  18 +-
 guide/de/ch_oview.xml                 |   2 +-
 guide/de/ch_txns.xml                  |  70 +++---
 guide/it/gnucash-guide.xml            | 456 +++++++++++++++++-----------------
 guide/ja/ch_accts.xml                 |  12 +-
 guide/ja/ch_basics.xml                |  42 ++--
 guide/ja/ch_bus_ap.xml                |  14 +-
 guide/ja/ch_bus_ar.xml                |  24 +-
 guide/ja/ch_bus_pay.xml               |   8 +-
 guide/ja/ch_capgain.xml               |   6 +-
 guide/ja/ch_cbook.xml                 |  24 +-
 guide/ja/ch_cc.xml                    |  26 +-
 guide/ja/ch_currency.xml              |  40 +--
 guide/ja/ch_dep.xml                   |   6 +-
 guide/ja/ch_invest.xml                |  60 ++---
 guide/ja/ch_loans.xml                 |  18 +-
 guide/ja/ch_oview.xml                 |   4 +-
 guide/ja/ch_txns.xml                  |  70 +++---
 guide/ru/ch_accts.xml                 |  12 +-
 guide/ru/ch_basics.xml                |  46 ++--
 guide/ru/ch_bus_features.xml          |  62 ++---
 guide/ru/ch_capgain.xml               |   6 +-
 guide/ru/ch_cbook.xml                 |  24 +-
 guide/ru/ch_cc.xml                    |  26 +-
 guide/ru/ch_currency.xml              |  78 +++---
 guide/ru/ch_dep.xml                   |   6 +-
 guide/ru/ch_invest.xml                | 164 ++++++------
 guide/ru/ch_loans.xml                 |  18 +-
 guide/ru/ch_oview.xml                 |   4 +-
 guide/ru/ch_txns.xml                  |  70 +++---
 manual/C/Help_ch_Customize.xml        |  64 ++---
 manual/C/Help_ch_GUIMenus.xml         |  16 +-
 manual/C/Help_ch_GettingStarted.xml   |   8 +-
 manual/C/Help_ch_Reports.xml          |   4 +-
 manual/C/Help_ch_Tools_Assistants.xml |  12 +-
 manual/C/Help_ch_Transactions.xml     |  32 +--
 manual/de/Help_ch_Reports.xml         |   4 +-
 manual/it/gnucash-help.xml            |  80 +++---
 manual/pt/Help_ch_Customize.xml       |  48 ++--
 manual/pt/Help_ch_GUIMenus.xml        |  16 +-
 manual/pt/Help_ch_Reports.xml         |   4 +-
 manual/pt/Help_ch_Transactions.xml    |   4 +-
 65 files changed, 1263 insertions(+), 1263 deletions(-)



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