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2F9900

Category: shells/command interpreters
Flags: Undocumented function

INT 2F - DOS Navigator II - INSTALLATION CHECK

	AX = 9900h
Return: BX = 444Eh ('DN') if installed
	    AX = number of DOS Navigator executions
	    CL = child process exit code
	    DX = version number (see #02965)
Notes:	old versions of DOS Navigator II always returned AH=1, while newer
	  ones return AH=0 and store AL in the DN.FLG file
Program: DOS Navigator is a multi-window shell for MS-DOS by RIT S.R.L.
	  DOS Navigator(TM) is a registered trademark of RIT S.R.L.
SeeAlso: AX=9901h,AX=9902h,AX=9903h,AX=9904h,AX=9905h,AX=9906h


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