Modifies the Nodes attribute of a given X25 Server Security
    Nodes instance to include at least the specified fullname or
    fullnames.

    add  [node node-id] x25 server security nodes simple-name -
          nodes {fullname[,fullname...]}

    Nodes

    Default: No node names       Value: Set of full-name

    DNS full names of accessing systems, or the wildcard full name.
    Note, when managing entities on an OpenVMS system, this name must
    be a Phase IV node name.