Marvin:

I suggest you download "ParseLocals" from this site:

http://www.theproblemsolver.nl/

It is quite a complete solution to this problem. (It finds almost all of the indirect ways of creating memo variables, except for SCATTER MEMVAR).

I have been using it for about a year and find it invaluable.

I'm surprising that there are not more tools like this available within VFP, and that their use isn't more widespread.