This is really nice! It’s great to see how you’ve organized things. I wrote a really rough UDL for I7 but not with as much rigor as you had. It basically just flagged volume/book/chapter etc., but I never figured how to un-highlight if “book” or “part” appeared mid-line.
I think this I6 example could provide a great roadmap for I7 & it might help me revisit that. Especially since I’m not the only person on here who seems to use Notepad++ to keep track of code… I7 language file for Notepad++?