After I heard about him, I went to my campus library and checked out "Afternoon." It comes on one 3.5" floppy disk and couldn't be removed from the reading room. So I sat down (at the only machine left with a floppy drive) and clicked through it for about an hour.

It is certainly very different from a usual novel. For starters you have no idea how long it is. Hyperlinks aren't highlighted as we've come to expect and so I have to admit that I was doing some Myst-style random clicking at times. You'll often get back to the same paragraph but through a different path, these paragraphs are usually written in such a way that they would make sense by any path that you'd arrived at them.