Category: <b>DESQview/TopView and Quarterdeck programs</b>
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<pre><b>INT 15 - TopView - "BEGINC" - BEGIN CRITICAL REGION</b>

	AX = 101Bh
Return: task-switching temporarily disabled
Notes:	will not task-switch until "ENDC" (AX = 101Ch) called unless task
	  voluntarily releases the CPU (upon regaining the CPU, task-switching
	  will again be disabled)
	suspends the caller until DOS is free
SeeAlso: AH=0Dh"MultiDOS",AX=101Ch,AX=DE13h,AX=DE1Ch,INT 2F/AX=1681h
SeeAlso: INT 60/DI=0602h
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