In the old applet based physlets there was a step(forward) and a stepback routine. I am missing that to a certain extend in EJsS.
If a user doesn't hit the run/pause button in time and the simulation has advanced beyond that point, there doesn't seem to be a possiblity to go back one step.
Maybe there is and I just haven't discovered it yet.
I have written lots of Physlets during he last ten years. When I started it was like learning how to ride a bike, in the end I got to know how to drive a big truck ;-) Now my aim is ocean liner but I am afraid I am still at rowing boat level ;-)
