gtpi1m2q | System Installation Support Reference |
Exit points are predefined locations in TPF system processing from which user-unique processing code can be invoked. This user-unique code (called user exit, user exit routine, and user processing) will then execute as an extension of a TPF system function.
Exit point status is not carried across an IPL. The ZSTIM command can be used during restart, cycle-up, or cycle-down to automatically activate or deactivate exit points.
A dynamic E-type program exit point is one that can be set on or off by SYSTC switches. A nondynamic E-type program exit point does not change. It is always on (that is, it is always called).
Along with the exit points, sample programs or stubs have been provided. As released by IBM, most of these stubs simply issue a BACKC, while some provide sections of sample code. You must change the program stub to an operational program to perform whatever processing is required.