Darrel has posted this to be placed at the top of the program as PBP takes care of this internally:
@ ERRORLEVEL -306 ; turn off crossing page boundary message

I didn't find the answer to the following however:
Message[305] E:\SOURCE.ASM 588 : Using default destination of 1 (file).

The upcoming version of FineLineIDE includes an unused button which shows variables "D2", "D3" and the label "error:" as unused.

Norm