What is the purpose of the FORMSETID and RECNUM fields?

FORMSETID and RECNUM are required fields, but if you look at the APPIDX.DFD file, you will see that these fields are not in there. This means they do not affect your database file size.

Note   In older versions, such as release 6.0, you will encounter errors if these fields are missing in the APPIDX.DAT file.