I vaguely remember that in the early days of the browser, one notion of what hypertext could be used for was a "zoom in" detail for academic essays: if you wanted a brief overview, you'd take the outermost level, and if you wanted to delve, you would click something and more sentences would appear.

I know this sounds trivial and now, but in the mid-1990s it was thought-provoking. Has anyone seen any web fossils like this lying around, ideally still live on the web somewhere?