Description

   The DELETE GROUP command deletes a group from a CMS library. If
   the group is not empty and the /REMOVE_CONTENTS qualifier is
   not specified, or if the group belongs to another group, CMS
   returns an error and does not delete the group.

   Even though a group is deleted, records of transactions that
   created and used the group are retained in the library history.
   You can reuse the deleted group name to create a new group.
   However, there is no distinction between the two groups in the
   library history, except that their transactions are separated by
   entries for DELETE GROUP and CREATE GROUP commands.

   To determine which elements and groups belong to a group, use the
   SHOW GROUP command with the /CONTENTS qualifier.