Mac software for managing 10+ cross-referenced books?

Some while back I said that I was putting together a sort of example workflow Scriv --> NWP. It’s taken time, but basically I’ve done it—though no doubt there are errors and omissions—so for good or ill, here you are Joy, and anyone else who’s interested. I attach—I hope—the .scriv project and the final RTF produced by Nisus following my approach. They are both zipped for upload to the forum.

I hope someone finds it useful.

Mr X

Scriv-to-NWP.rtf.zip (15 KB)
Scriv-to-NWP.scriv.zip (107 KB)