Let's say you want to update a typo in a lengthy document, I think it's worth the trouble. Good diff algorithm is hard, but there is open source solution. http

Let's say you want to update a typo in a lengthy document, I think it's worth the trouble. Good diff algorithm is hard, but there is open source solution. http://code.google.com/p/google-diff-match-patch http://code.google.com/p/google-diff-match-patch