Let's see-- 5.0, 5.1, 1.1, 3.0, 3.1, 4.0, 5.0, 5.1...
I'm getting dizzy. I don't blame you for wanting to correct that, but when you do, just do it so it makes sense. If you want to tie it back to the standard, that's fine, although unnecessary as I said earlier. Some people like to do that for the sake of outside auditors being able to relate the documentation back to the standard.