The hypertext description starts in section 7, and continues in section 8.
He does have some fascinating projects though. Xanadu, a sort of visual hypertext browser & editor, is something I'd like to see a "real" implementation of. Any decade now...
and to me, at least, it becomes very clear why the WWW won the race.
"Simple" is a very important concept in the real world, and what he churned out was anything but.
[I recall his book "Computer Lib" as being almost completely unreadable too, and remember thinking that he must have doing drugs when he wrote it...]