VMS Help SHOW, USERS, Qualifiers, /SUBPROCESS  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /SUBPROCESS
       /NOSUBPROCESS

    Displays all subprocess users in the OpenVMS Cluster environment.
    To restrict the display to users on specific nodes, use the
    /SUBPROCESS qualifier with the /NODE qualifier. When you use
    the /NOSUBPROCESS qualifier, all subprocess users in the OpenVMS
    Cluster environment are excluded from the output.