1) All names from the input group are copied to the output group except for those with indices in the given range.
2) Only those names from the input group which have indices within the given range are copied to the output group.
The method used is determined by the argument REJECT. Note, a name with a given index in the input group will have a different index in the output group if INDXLO is not 1 (or zero). The new group inherits the type, control characters and case sensitivity flag of the old group, but does not inherit any owner/slave relationships (see routine GRP_SOWN). If the input group is no longer required, it should be deleted using GRP_DELET.
GRP Routines for Managing Groups of Objects