With dns$control you can manage the components of DECdns and the
    contents of the DECdns namespace.

    To invoke dns$control on OpenVMS, enter:

    $ run sys$system:dns$control

    For more information about dns$control, you may either invoke the
    utility and enter "help" at the DNS> prompt, or refer to the
    DECnet-Plus DECdns Management manual.