Any individually manageable DECdns component or piece of the
 namespace is called an entity. A set of commands exists for each
 entity. The following is a list of the entities that are supported
 in the name service:

    child
    clearinghouse
    directory
    dns clerk
    dns clerk known namespace
    dns clerk manual nameserver
    dns clerk remote clearinghouse
    dns server
    dns server clearinghouse
    group
    link
    object
    replica
    subtree