
    TYPE
      mmt$lock_segment_status = (mmc$lss_none, mmc$lss_queued_for_lock_user, mmc$lss_queued_for_lock_r3,
              mmc$lss_lock_for_read_user, mmc$lss_lock_for_read_r3, mmc$lss_lock_for_write_user,
              mmc$lss_lock_for_write_r3);
