VMS Help CREATE, /NAME_TABLE, Qualifiers, /USER_MODE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Creates a user-mode logical name table. If you do not explicitly
    specify a mode, a supervisor-mode logical name table is created.

                                   NOTE

       User-mode logical names are automatically deleted when
       invoking and exiting a command procedure.