/sys$common/syshlp/helplib.hlb DEFINE, Qualifiers, /SUPERVISOR_MODE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /SUPERVISOR_MODE (default)

    Creates a supervisor-mode logical name in the specified table.
    The mode of the logical name must be the same as or less
    privileged than the mode of the table in which you are placing
    the name.