I find these dives into Classic macOS fascinating. I didn’t have the technical knowledge I do now when I was a kid using it. So it’s interesting learning about how things worked internally and how they pulled things off like the PPC transition.
This is really cool. I’d like to learn more about how extensions work; I looked at the source code for CivHack (a compatibility hack INIT for one of the Civilization games) to figure out how the boot icon drew but didn’t get very far in actually writing an extension of my own.