The Network Control Program (NCP) is a utility program
   system managers and operators use to configure and control
   DECnet Phase IV for OpenVMS networks.  System managers can
   also use NCP to monitor network resources and test network
   components.

   More on-line help is available from the Network Control Program
   utility. To invoke NCP, enter the following command in response
   to the DCL prompt:

   $ RUN SYS$SYSTEM:NCP

   The utility responds with the prompt:

   NCP>

   After you invoke NCP, you can enter HELP on any of the NCP commands.