blitzcc.exe question

I'm making a simple IDE, using B3D, this is what I don't understand, how do I make this under B3D

"IMPORTANT: If you are planning to use BlitzCC with a 3rd party editor, you must setup an environment variable called 'blitzpath' that points at the blitz directory (ie: the one 'blitzbasic.exe' is in)."

how do I set up that in B3D? does anyone have an example of this in B3D?

xmlspy

now what the hell does setenv mean?

soja

come on, look it up in the docs. description, example, everything you want