I would like to have the option to include / execute part of the code in an include file if it was NOT included... Hmmm. That didn't come out right

Here's what I mean:
1. assume I have an include file whatever.pb(i) and a main source main.pb
2. i want to add some testing routines to whatever.pbi, and if i run [F5] whatever.pbi, it will execute those procedures
3. however, when i run main.pb i do NOT want those routines from whatever.pbi to be run
This way it's easier to maintain and test include files without having to resort to an addtional 'test' file. I hope this makes some sense... (In effect, it could be expanded into module testing, but I'd already be happy with the option above
