Matrix reference link in the File Format document

[Orion Pobursky]

I strongly suspect that this is an archive copy of the page we linked to before:

https://www.oocities.org/evilsnack/matrix.htm

I found that one and thought the same thing

Having said that, it's probably not a great idea to link to the above. What about the following one?

https://www.migenius.com/articles/3d-tra...1-matrices

That's a good one. I'll use that.