Invoice mod docs

[Jon Lapham]

I made the invoice modification documentation.  Check 'em out:

http://www.jandr.org/temp/gnucashdocs/bus_ar_invoicechange1.html

Featuring the gimp stylings of yours truly.  :)

PS: Any one want to hire me to do your company logo?  (cough, cough, 
yeah right...)

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  Jon Lapham  <lapham at extracta.com.br>          Rio de Janeiro, Brasil
  Work: Extracta Moléculas Naturais SA     http://www.extracta.com.br/
  Web: http://www.jandr.org/
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