Communicating with other people using the system.

  MAIL              Sends/reads messages to/from other users.
  PHONE             Permits users to communicate by typing messages to
                    one another's terminal screens.
  REPLY             Displays a message on one or more terminal screens.
  REQUEST           Displays a message on the operator's console.

  SHOW USERS        Lists the interactive users on the system.

  Type ? to display the list of HINTS.
  Type CONTACTING_PEOPLE to redisplay this particular hint.
  Press the RETURN key before typing a command or topic name.