My apologies: the windows Algodoo has the "save and share" button near to the "save" button. As I'm doing trial and error development as a definite non-mechanical engineer, I am always saving at each successful stage. I'm making progress, though, but don't have enough time to progress as rapidly as I desire.
I mean to make a mechanical adder with accumulator and counter. I'm struggling with scripting and keep screwing up the logic. I've scrapped the endeavor several times and rebuilt from scratch as I discover assumptions I'd made that were too stupid to survive real world operaations.