Library /sys$common/syshlp/tcpip$ucp_help.hlb SET, HOST, Qualifiers, /ALIAS  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /ALIAS=alias
       /NOALIAS=alias

    Optional.

    Add or remove an alternate name for a host.

    Do not use with SET NOHOST.