CHG: CLEAR is no longer a seperate command (variables are still cleared etc on run and so on.)
CHG: XLOAD and XGO now check the line numbers are in order as they do an append not a normal edit
(using normal edit doubles the load time)
CHG: OpenStructure error no longer displays weird line number.
CHG: BSave and BLoad functionality now in their own subroutines for being trappable.
CHG: EXTInputLine is now in the main code area.
BUG: Sound queue not processed on keyboard input in various forms.
BUG: Fixed Mouse negatives counting.
CHG: MOUSE command changed to MDELTA, added new MOUSE command.
CHG: Added TRY for BLOAD/BSAVE
