I thought about it, and settled on the compromise of referring to it up front, and then putting it at the end. That's because there are many ways you could use

I thought about it, and settled on the compromise of referring to it up front, and then putting it at the end. That's because there are many ways you could use a document like that. And the Terminology section is very overwhelming unless your goal is to understand how OAuth 2 REALLY works, and why it works that way.