C: #include <climb.h> _frseg(ptr);
PL6: DCL X_FREE_SEGID ENTRY(1); X_FREE_SEGID(ptr);
"_frseg" frees a segment whose descriptor is in the Linkage Segment or the Argument Stack. It also marks the SEGID slot "open" so that it is available for future use (e.g. to be allocated by a call to "_gtseg").
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