The Network Control Program (NCP) is the utility program
   system  managers and operators use to configure and control
   DECnet 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.