INT 2F - WinDOS v2.11 - INSTALLATION CHECK AX = AF00h Return: AL = FFh if installed Program: WinDOS is a DOS clone (claimed to be mostly MS-DOS 5.0 API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. compatible) written by Heiko Goemann SeeAlso: AX=AF01h"WinDOS",INT 21/AH=30h