z/OS DFSORT Application Programming Guide
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E11 user exit: opening data sets/initializing routines

z/OS DFSORT Application Programming Guide
SC23-6878-00

You might use routines at this user exit to open data sets needed by your other routines in the input phase. It can also be used to initialize your other routines. Return codes are not used, however.

Note: To avoid special linkage editor requirements (see Summary of rules for user exit routines), you can include these functions in your E15 user exit rather than in a separate E11 user exit routine.

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