Display the current default values for all optional parameters.

     SHOW DEFAULT

 Display information from a node registration in a directory service.

     SHOW [DECNET] NODE node-id
         [ DIRECTORY_SERVICE dir-service ]
         [ display-mode ]
         [ PHASEIV_PREFIX addr-prefix ]
         [ REVERSE_DIRECTORY rev-dir-name ]
         [ SYNONYM_DIRECTORY syn-dir-name ]
         [ NSAP_FORMAT format ]
         [ OUTPUT_FILE out-file-name ]

 The SHOW NODE command reads node registration information from a directory
 service and displays it on the screen or writes it to a file.  If the FULL
 display mode is used, this also verifies that all reverse address mapping
 and synonym links are set up properly for the node.