5. Description and implementation notes.

   The quality of the client implementation will depend on it's ability
   to display and erase text strings in a small amount of time.  The
   current implementation at CMU takes into acount terminal line speed,
   advanced video capabilities, and screen phospher persistance when
   calculating how long to wait before erasing a message.

   While it is permitted for the client to display the message text
   "in-line", best results at obtained by printing the message at the
   top or side of console screen where it will just catch the corner of
   the user's visual field.

   A version is currently under development at CMU to display the
   message using morse-code over the keyboard caps-lock LED.