Library /sys$common/syshlp/nclhelp.hlb set, routing, manual_area_addresses  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Support: L1,L2
    Default: No area       Value: Set of area addresses
    addresses

    Area addresses to be used for this node. An area address cannot
    be a Phase IV address or the address DefaultArea.

    If the characteristic manual L1 algorithm has the value routing
    vector, this set must be empty, and the characteristic phase iv
    address must not be 0.0. If the characteristic phase iv address
    is 0.0, there must be at least one area address.