Using multitasking with tape stacking or cabinet copies
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does not terminate stacking on a tape or cabinet copy for a given OUTPUT descriptor at the end of the group or set processing if the OUTPUT descriptor is referenced by a COPY statement for a later group or set. (A set is a set of multitasking GROUP NO COPY statements in the job.) The same tape or cabinet copy is used for all spaces. When
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detects that a stacked tape or cabinet output is not used in a future group or set,