Biota has been implemented in Smalltalk and Javascript. Here we squeeze Ian Osgood's implementation into a Frame. github 
Ian separated the interpreter into a separate file we load from the same assets, not quite a module, but close.
The simulation is controlled from and animated within the Frame in which it runs.
The Flagellum was our best Biota program ever. Here we have slimmed down Ian Osgood's implementation to show this one program running.
Include a working example if possible.
http://code.fed.wiki.org/assets/pages/biota-flagellum/flagellum.html HEIGHT 230