INT 2F - AD-DOS - SET ??? INTERNAL FLAG TO 01h                                  
	AX = C00Ch
Return: AX = status
	    0000h successful
	    000Ch failed
Program: AD-DOS is the DOS version of the After Dark screen blanker for
	  MS Windows
Range:	AH=C0h to AH=FFh, selected by scanning for first free multiplex number
Index:	screen saver;AD-DOS