Frequently I just make mistakes and mean to type one thing and accidentally hit another letter. I know the verse, but I have to start all over to accurately check my progress because I won't get 100%. It would be great if you were allowed one mistake or "re-do" per verse, so that you could just stay on that verse and perhaps not get any mistakes as you would have without accidentally typing the wrong thing. I'm not sure if this would be an enhancement or a new feature. Thanks for your consideration!