CALL xxxxh:xxxxh - DOS Task Switcher - CalloutA call made by the operating system, operating environment, or an application program on various events, which may be intercepted by other software which is interested in the current state of the system. See also Callback, External Device Interface.
InstallCheck:	see INT 2F/AX=4B01h
SeeAlso: INT 2F/AX=4B01h