4. Both is project wide. You can't set single files on debug as the BMK calls those things for the whole makeapp process not for a single source file. (debug -> -d flag on bmk call. release -> -r flag on bmk call, gui -> -t gui on bmk call, console -> -t console on bmk call and others that you can find in the bmk_modutil.bmx in the src/bmk folder)