A new Demonstration of mine got published, namely, Two-Color Left/Right Mobile Automata:
This Demonstration lets readers of A New Kind of Science explore two-color mobile automata as given in the examples on pages 71–77. You can see the evolution of the rules for a set number of steps (going down), the rule icons, and the compressed evolution. The range sliders let you zoom to see detail.
I have more mobile automata Demonstrations, as well as substitution system Demonstrations, in the pipeline. I’ll post them up when they get published.