spl / splitscreen             Toggles split screen mode in the 'main' window
 
   Format:
      ;spl                    Toggles split screen mode
 
   Notes:
      In split screen mode the 'main' window is split into two. When text is 
         received from the world (or when a system message is displayed), only
         the lower section scrolls to the bottom.
      If you're trying to read a help file, it might be convenient to turn on
         split screen mode for a while, so that you can keep an eye on what is
         happening in the world without losing your place.

      The 'main' window typically includes some buttons next to the command
         entry box. The empty window button toggles split screen mode. If the 
         window has multiple panes, the 'switch active pane' button next can 
         switch between them; split screen mode is then toggled on the active 
         pane.
      See also the help for the ';scrolllock' command.

   User commands:
      spl / split / splitscreen
