Thanks, that was a very comprehensive review! I've thought about it several times but never tried it, and I think you've just convinced me not to. I suppose I could live with no punctuation, it works for the self-generated subtitles on YouTube videos, but of course there you can also hear the people talking, so that gives you a good idea of what the punctuation would be. And I see what you mean about hard to detect errors. Especially if it's a big block of text, I tend to just rapidly scan it and could easily miss many kinds of subtle errors. If I'm typing I can always feel when I messed soemthing up and just go back and fix it.