price editor

[Jon Lapham]

Can someone define the following "Commodity Type" terms from the Price 
Editor (in the window that appears when you add or edit a commodity price):

Ask
Bid
Last
Net Asset Value
Unknown

Besides a definition, are there reasons you would choose one over the 
other?  Does GnuCash calculate anything differently based on this 
option, or is it just informational for the user to know how the price 
was derived?

Thanks,
Jon

-- 
-**-*-*---*-*---*-*---*-----*-*-----*---*-*---*-----*-----*-*-----*---
  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/
***-*--*----*-------*------------*--------------------*---------------