>Does anyone have any reference material as to the structure of the fields
>in class libraries. Some of the fields are obvious, but other are ambiguous--
>Reserved1-Reserved8?

Michael,
There was an article in the April 1997 FoxPro Advisor titled "Create Visual Header and Cursor Subclasses" which you might get some useful snippets of info from. Of the Reserved1-8 fields it only references Reserved3 which it describes as a list of class members. It also gives some details of some of the other 'named' fields (class, baseclass, objname, properties & methods).
If you don't have access to this article and you want some more details reply to this posting & I'll type in some more of the article.

HTH
Craig