The Hold All Output Queues command holds all output queues in one or more
libraries using generated HLDOUTQ system commands. A single output queue name,
a generic name, or all output queues may be held. An ACTION parameter allows
either *CHECK or *HOLD. HLDALLOUTQ can assist when a full or partial shutdown
of the system is needed. You must have both *ALLOBJ and *JOBCTL special
authority to use HLDALLOUTQ. See the companion tool RLSALLOUTQ.