Some users will use the same outdated version for years. Description and implementation notes. 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. In the following example all numbers are in decimal notation. The client should immediately begin displaying the message and should continue to do so at regular intervals.
Server preempts previous subliminal message.
The client should now no longer display the previous message and should immediately begin displaying the new one. Server has messed with user enough for one day. The client must cease display of any subliminal messages.