In the absence of a default node entity, if no node is specified
    in an NCL command, then the default node-id is 0, which represents
    the local node.

    You can specify a node-id in an NCL command in various ways, using
    either a node name or address.  Under certain conditions, the
    unqualified node name (often identical to the node synonym) may be
    used in an NCL command as the node-id.