/sys$common/syshlp/NCLHELP.HLB  —  create  event_dispatcher, Exception Messages
 o  entity class not supported (OpenVMS)

    The Event Dispatcher has not registered with EMAA.  The NET$EVD
    process is probably not running.  For instructions on restarting
    the process, refer to HELP NETWORK_MANAGEMENT EVENT_DISPATCHER.
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