Add description of kunst.py
diff --git a/Demo/sgi/gl/README b/Demo/sgi/gl/README
index 7a8caae..a89a502 100644
--- a/Demo/sgi/gl/README
+++ b/Demo/sgi/gl/README
@@ -8,6 +8,12 @@
kites.py Show 3 flying kites. Demonstrates the rendering speed
obtainable by Python programs.
+kunst.py Cute demo showing a ball suspended on four cables in
+ the central room of the CWI building. You can specify
+ three functions Fx(t), Fy(t), Fz(t) which define the
+ movement of the ball. Try something like sin(t),
+ cos(t), sin(2*t).
+
mclock.py A colorful clock with more options than you can
remember. Works on 8-bit machines, but allows more
colors on 24-bit machines. See mclock.doc for more