CALL xxxxh:xxxxh - Cloaking - REAL-MODE 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. InstallCheck: see INT 2F/AX=4310h"Cloaking" SeeAlso: INT 2F/AX=4310h"Cloaking"