>Having finally found a bug in my code (countrol source for primary key being used twice) which
>resulted in misleading (at least to me) error message about the uniqiness of an index being
>violated I was wondering what tools there are for examining the code of forms and class.
>In the old days on a mainframe when I compiled the code I could get list of variables used and
>where they were used. Are there any such tools for VFP? What tools do others use to
>document forms, classes, projects, program logic, etc?

Look at the Documenting Wizard, accessed from the Tools/Wizards menu on your development system.