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

    Requires write (W) access or SYSNAM (system logical name)
    privilege to place a name in the system logical name table.

    Places the logical name in the system logical name table. All
    system users can access the logical name. The /SYSTEM qualifier
    is synonymous with the /TABLE=LNM$SYSTEM qualifier.

    If you enter more than one of the qualifiers /PROCESS, /JOB,
    /GROUP, /SYSTEM, or /TABLE, only the last one entered is
    accepted.