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 ./Tron <number>

Start Tron with a Games.Tron a ~
       a (1 - 10) speed of the game.

   During the game, the following keys are availiable:

 Player One:
         a ... turn left
         s ... turn right
         d ... turbo On/Off
 Player Two:
         4 ... turn left
         5 ... turn right
         6 ... turbo on/off
 General keys:
         p ... pause
         q ... quit