DIR
DIR tells UNLOAD PLUS the number of 256-byte records to allocate for the directory of a new PDS or PDSE.

This option is valid only when you are unloading LOB or XML data to a referenced file, and DSNTYPE is PDS or LIBRARY. UNLOAD PLUS ignores this option when DSNTYPE is HFS. If you specify DIR for a primary or secondary output data set (SYSREC or SYSRED), UNLOAD PLUS terminates.
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