I've looked at this web-page several times.. never noticed that.
Also learnt something new.
Here's another fun Apple Unknown: https://www.youtube.com/watch?v=-h4t33tOG60 [Linus Tech Tips] https://www.youtube.com/watch?v=Yz05U67NecI [Obsolete Geek]
When I read about a/ux sometime in the early 2000s I eBay'd a Mac quadra (you need one of the 68k models with an mmu) just to try it out.
As someone who thought Classic Mac OS was a pretty cool ui, I have to say it was fairly awesome.
You learn something new every day.