Totally correct! It has to do with managing the custom forms for the volume of clients that we have. Client wants saleswindow.dll modified but likes the orderwindow.dll, we just modify the saleswindow.dll and when we produce updates he gets the latest orderwindow.dll but his saleswindow.dll remains customized. It's been working well with VFP for 11 years, just they were SCX and SCT pairs.

My prior questions probably all make sense now. Thank you for your help, there will be more questions for sure. I have not gotten to database yet, oh boy! Have a great weekend and be well.