Drop the Desktop see-also links, and quote after="file" The desktop is not on the wire protocol and is not going to be, so the wiki -- which documents the wire -- has nothing to say about it. The three See also links pointed at a page that should not exist. after is a string property, so after=file is rejected with "expected a quoted string". The registration's own tip showed it unquoted, which is where this came from; that is fixed at the source, so the generated table now carries the right spelling too.
Add MDIPane and Dock pages; generate the item and option tables