Another forum user "wangp" just pointed out that the property I needed for my situation wasn't currently documented.

There are a lot of places in the documentation where I get by because I've been using Prince long enough to know what I'm supposed to do, but where if I had the opportunity, I would add to the documentation both to support others and to support forgetting-later-myself.

Is your documentation on github or something? I'd like to pitch in

John Haugeland is http://fullof.bs/

The documentation is being updated all the time. It would be nice if you could detail the "lot of places in the documentation" where you get by, so that it can be further improved.