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Category: file manipulation
Flags: Undocumented function

INT 2F - DOS 3.3, DOS 5.0 APPEND - HOOK INT 21

	AX = B703h
	ES:DI -> INT 21 handler APPEND should chain to
Return: ES:DI -> APPEND's INT 21 handler
Note:	each invocation of this function toggles a flag which APPEND uses to
	  determine whether to chain to the user handler or the original
	  INT 21
SeeAlso: AX=B700h,AX=B706h

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  Copyright 2000   by Ralf Brown     Updated Jul 2000