The MAP keyword controls the printing of an extents map of the VOLSER or UNIT parameter values, following the VOLINFO report. The MAP keyword is valid only with the VOLINFO command, and it requires that either, or both, keywords UNIT and VOLSER be present. When MAP(EXTENTS) is specified, a listing documenting the complete extent map of all data sets and free space is generated. When MAP(FREESPACE) is specified, a listing documenting the free space is generated. When MAP is omitted, the extent map report is not generated. Only one MAP keyword is allowed per VOLINFO command.
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