As far as I know and what I have seen for Refox, it can give source code from our compiled object code. i.e. .prg from .fxp (say for FoxPro dos)

So i believe its not the matter of whether to include source or not. These third party tools are specialised to give source from compiled files. Try.

Ofcourse these tools are very helpful incase we loose our own source.

How to protect source code from these?