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

       /HOST=host

    Required.

    The NFS client host or hosts that will have access to the
    specified NFS file system.

    You may use a wildcard to allow access to all hosts.