A suggestion for the mentalcalculation program. I am actually starting to use it for anzan proper (until now, I was using it to dictate a list of numbers I would enter on a physical soroban.)
It would be useful to have a "Replay" to re-dictate the last problem set, for practice purposes. I find the ones I miss are the ones I need to practice most, hence the "replay"/"try again" feature.
