Why does it offer a description of its own syntax, if it's not a language? I don't see anything on that Github page about using any other languages or how one w

Why does it offer a description of its own syntax, if it's not a language? I don't see anything on that Github page about using any other languages or how one would specify which language you're writing in. You have syntax examples for USL instead. I'm sorry, I don't see the purpose or benefit or even a single example of how it would do what you're talking about. They may be there, but the doc isn't showing that.