Boeing Illustrated Parts List Elements

Hi All,

I am working on a FrameMaker document that is a Boeing Illustrated Parts List. I need to create an XML version for the client. I have some sample XML files and it looks like each table row becomes an <item> element. Does anyone have a guide that explains all of the descendants of the <item> element? For example,

tqa

adt

opt

lbl

etc. I can figure some of them out, but it would be nice to have an official guide. Thanks in advance.

-Rick