The following display modes are provided, to display the indicated
 information.

   NAMES
     - The fully specified name, as defined in the directory service.

   BRIEF
     - The fully specified name, as defined in the directory service.
     - The name of the link (if any) used to access the node information.
     - The Phase IV synonym name registered for the node.
     - The NSAP addresses registered for the node.

   FULL
     - Same information as the BRIEF mode.
     - The address tower information registered for the node.
     - The link name used to map the synonym to the node name (if any).
     - The link names used to map NSAP addresses to the node name (if any).

 The FULL mode also provides consistency checking, and prints messages
 describing any inconsistencies it finds, such as a missing synonym or NSAP
 address link, or a link that points at an incorrect name.

 If no mode is specified, the BRIEF mode is assumed.