Now, that version 3.0 is finished, I decided to publish my program in the English forums, too.
It's a small program for calculating Lindenmayer-Systems.
Information about Lindenmayer Systems:
http://www.biologie.uni-hamburg.de/b-on ... /lsys.html

The screenshot is from version 2
You can now choose between a realtime calculation while you are changing values and a press-button-calculation (or F1) for more complex calculations.
You can download it here
http://www.purearea.net/pb/showcase/show.php?id=151&d=1
First of all, it was just fun, but then we began to discuss this topic in school and nearly every classmate became interested in it. So I enhanced it step by step to a nice little tool.
Have fun and inform me about bugs!
greetz
Remi