You may think of hyperthogonal structure as

• sculptures of cells in three dimensions or more
• crossed lists in multiple dimensions
• irregular constructions of cells at right angles and side-by-side
• crystals of lists in corresponding connection

Hyperthogonal structure adheres to no formal model anybody knows. Nobody's come up with a correct mathematical description, though a number of people have tried (without hands-on experience).

Quoting his American friend "Abi" on living in cold Because if you wear enough clothes, you can challenge what constitutes "inside".

Tim Berners-Lee [...] created the World Wide Web which was the sixth or seventh hypertext system on the internet. People think it sprang from the brow of zeus, in fact it was just a clean, a clean job, that had the clout of CERN behind it, and so, uh, it wasn't that magical or magnificent. It's just the one that caught on and if my team had delivered a year before when they were supposed to, I was not in charge of the time, it might have been Xanadu instead of the World Wide Web

And he said now is the time to start thinking about what would be the documents of the future. So I said [...] what can you do on the screen that you can't do on paper? And I was a writer, I'd done a great deal of writing and I believe some rather original magazine layout and stuff, and so, I was very open to new ways of doing this. I didn't like the restrictions of paper.

As I would abstract it now, [...] we can have parallel connections between visible documents, so [...] you can have two pages with a connection saying this sentence is connected to that paragraph and see it as a visible strap or bridge, and [...] you can't do that yet. So, that was one of my hypertext concepts, and the other hypertext concept was being able to click on something and jump to it, so as the hypertext concept developed and deteriorated over the years [...] only the jump link, became popular in the hypertext systems in 60s and the 70s.