PD and using L-systems sound

Greetings All I found a good tutorial that graphs and explains (axioms and Rules) but how would I convert the rules into Puredata audio logic? http://penguinpetes.com/b2evo/index.php?title=inkscape_tutorial_l_system_fra...

I did find this but really couldn't see how he chose the values that he did does anyone have the audio/video lecture of this? http://download.puredata.info/convention04/lectures/tk-chenry/

tia