Allows you to visualize hierarchical planar curves, as well as epicycloids and hypocycloids: a superset of the curves. Hierarchical planar curves represent the paths taken by stationary points within a circle which belongs to a system of circles (automaton), wherein every circle in the system, except one, rolls along the circumference of one other circle. The movement or animation of automata can be observed in two modes: instantly with the "Design&quot\; function, or as a movie of a specific duration. In addition, you can save and print your automata.