VMS Help DTM, REVIEW, Review Subsystem, SPAWN, Command Qualifiers, /NOTIFY  *Conan The Librarian (sorry for the slow response - running on an old VAX)

   /NOTIFY
   /NONOTIFY (D)

   Determines whether a message is sent to the terminal to notify
   you that the subprocess has completed or aborted. Do not specify
   /NOTIFY unless you also specify the /NOWAIT qualifier.