Thank you for the pointer.
I had found that documentation, but then I saw the message ‘This documentation is still a work in progress. Additional module documentation is available on the Slicer wiki’, so I wasn’t sure which documentation I should be looking at.
I was (am) also confused by the fact that some of the links on the wiki still work.
Would it be feasible to put dummy pages in the wiki that link to the current documentation?
I think all those wiki pages should redirect to the readthedocs, and I think there was some discussion of that recently on the forum, though not sure when that can happen.