.TITLE	MMT7..
	.IDENT	/MMT7../
	.MCALL QIOW$S
;
MT$BACK:			;THIS ROUTINE BACKSTEPS ONE BLOCK
;
;	ENTRY CONDITIONS
;	NONE
;
;	EXIT CONDITIONS
;	STATUS = SUCCESS OR ERROR
;
;
	QIOW$S	#IO.SPB,MT$LUN,MT$EFN,,#MT$ISB,,<#-1>
	JMP MT$EXIT		;RETURN VIA GENERAL EXIT ROUTINE
;
	.END
;
;
;