It's been on my list for a long time to try this out. Basically, when you type or click a tone (not write one) and it's correct, it will automatically go to the next prompt for you after a split second.
I've been practicing with it for a little bit and after a little bit of getting used to, it seems a bit faster--but I can't tell whether it's good. So I've turned it on for everyone as a test. Let me know what you think: better this way, or before?