INT 2F U - SpaceManager - INSTALLATION CHECK                                    
	AX = C300h
	DX = 0000h
Return: AL = FFh if any SpaceManager programs installed
	    BX = 6F73h
	    CX = 6F68h
Program: SpaceManager is an enhancement for MS-DOS DoubleSpace by Vertisoft
	  Systems, Inc.
Range:	AH=C3h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C300h/BX=4F53h