The DECNET_REGISTER utility is normally invoked using the RUN command.
 It can also be invoked using a foreign command symbol.  For example:

     $ RUN SYS$SYSTEM:DECNET_REGISTER          !Invoke the utility

     $ NETREG :== $SYS$SYSTEM:DECNET_REGISTER  !Foreign command symbol
     $ NETREG                                  !Invoke the utility

 If a foreign command symbol is used, a command line can be passed directly
 to DECNET_REGISTER on the invocation command line.  For example:

     $ NETREG SHOW NODE MyNode

 If the utility is invoked by a foreign command symbol with a command line,
 as shown above, it executes the command and exits after the command is
 complete.  If not, it continues to accept commands until an explicit
 exit command is issued.