Canon Cat Emulation (archive.org)

Here are the rules for the "humane interface" that Jef Raskin tried to implement on the Canon Cat. https://en.wikipedia.org/wiki/The_Humane_Interface

It's fantastic to hear that somebody's actually written an emulator! I dug around looking for one only a couple weeks ago, and the closest I could find was somebody's blog post from 2011 where they managed to get the ROM dump running in MESS but hadn't implemented input support.