Library /sys$common/syshlp/mailhelp.hlb SET-SHOW, PERSONAL_NAME, Qualifiers, /USER  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /USER=name

    Used with the SHOW PERSONAL_NAME command to allow a user with
    SYSNAM privilege to list personal names set by other users. There
    are two ways to show a user's personal name. The user name can
    be specified, or you can use the wildcard characters (* or %) to
    search for names with a particular string in common. The /USER
    qualifier works only with the SHOW PERSONAL_NAME command and not
    with the SET PERSONAL_NAME command.