This was mostly mechanical. There are only two things of note:

1. A couple sentences ended with commas instead of periods. I changed
   them to periods. They were both in the Binding Modes section, so I
   assume they were added together.

2. In the static/dynamic behavior for or patterns, for two sections, I
   separated lines based on commas instead of the one really large
   sentence they are.

This rewrite not only adds half-open ranges to the documentation for
stabilizing the feature, it also rewrites the entire section to answer
more questions about how they work, like what types the range patterns
actually match against.