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DOS 3.0+ PRINT.COM - SET CRITICAL REGION FLAG

AX = 2001h
ES:BX -> byte which is to be incremented while in a DOS call

Return:
Nothing

Desc: Specify a user flag which PRINT should set to let an interested application know it is in a critical region

Note: Also supported by PC Network v1.00 RECEIVER.COM

See Also: AX=2000h

Category: Caches/Spoolers - Int 15h - D

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