This is a game historycal source taken from http://web.archive.org/web/20050212180221/http://www.vis.inf.ethz.ch/~andy/Oberon.html

It serves as an example of XYplane module usage.

build by typing:

make

run by
./Tetris


     * Start Tetris with Tetris.Start a~
       a 1 or 2 for One or Two-Player-Modus

   During the game the following keys are availiable:

 General keys:
         p...Pause
         q...Quit

   The other keys can be changed by the player.

