VMS Help MONITOR, SET_DEFAULT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    The SET DEFAULT command sets command qualifier, classname
    parameter, and classname qualifier defaults for the MONITOR
    command. Each SET DEFAULT command sets only the command
    qualifiers you specify, but replaces the entire set of classname
    parameters and classname qualifiers. All qualifiers and class
    names are identical to those for the MONITOR command.

    Format

      SET DEFAULT  [/qualifier[,...]] classname[,...]

                   [/qualifier[,...]]