Users can issue the OUTDES command to create or reuse a dynamic output descriptor. Users can then reference the name of the output descriptor when they issue the ALLOCATE or PRINTDS commands. By using output descriptors, users need not specify different output-related operands on the ALLOCATE or PRINTDS commands. For information about OUTDES and its operands, see .

TSO/E provides an initialization exit and a termination exit for the OUTDES command. You can use the exits to customize OUTDES processing for your users. The initialization exit receives control before the OUTDES command processor invokes the parse service routine to parse the command. The termination exit receives control just before the OUTDES command processor completes processing. If the initialization exit returns successfully to the OUTDES command processor and OUTDES processing itself abends, the OUTDES command processor invokes the termination exit before it terminates.

You can use the initialization exit to change the operands that users specify on the command or correct user errors when they issue the command. You can use the termination exit to perform clean-up or special processing prior to OUTDES completion. Depending on the processing your initialization exit performs, you may not need a corresponding termination exit.