>I don't understand. What's this do? I performed what you said, but only
>noticed that all of the "+" signs were no longer expanded; I had to click to
>expand them as they were before. Did anything actually happen? If so, what?
>Also, I noticed under Project Info there's an option for "Encrypt" -- does this
>encrypt the EXE at all, or just other files, like data files?

It does encrypt only the EXE, yes. What Clean Up Project does is pack the .PJX, removing deleted rows which would otherwise be built into your .EXE.