Creating and Deleting Groups

GRP_DELET( IGRP, STATUS )

Delete a group

GRP_COPY( IGRP1, INDXLO, INDXHI, REJECT, IGRP2, STATUS )

Create a new group containing a copy of a section of an old group

GRP_NEW( TYPE, IGRP, STATUS )

Create a new, empty group

GRP_PURGE( IGRP1, IGRP2, STATUS )

Remove duplicate entries from a group, putting the results in a new group

GRP_REMOV( IGRP1, NAME, IGRP2, STATUS )

Remove all occurrences of a given name from a group, putting the results in a new group