@MitchW If you need to bookmark and you're not reading on a phone, DT will let you clip pages as a paginated PDF, or a single long PDF. Those can be bookmarked. If you're reading on a phone too, the webarchive works well. In that case I'd be looking at highlighting (jump to relevant highlight with with document annotations inspector) or simply making a note of the section title or first sentence or clause of the paragraph where I want to jump back in (the way I would note a location to cite any unpaginated text in a footnote). This is the method I would use on GL too. I've never managed to make DT feel good as a working environment on my Mac or iPad, but it makes a decent archive, and it's okay to read in. Also, you can open its files in any app configured for that particular file format.