Example file for the Keyboard Handler Tutorial.
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I'm sorry if these sources won't compile with you. It can be easily ported
by just changing a few function names and such. The example is a simple
parallax starfield which shows you the use of replacing the timer interrupt
as well (just to get you used to interrupt replacing). With the timer however,
I didn't want to write the complete interrupt so I called the old interrupt
at the end of the function.

   -- Alioth
