Congratulations on a truly neat project! I'm particularly impressed by the revision control system. Since acquiring a Mac Plus and an SE/30 I've wanted to try a bit of programming, but have not really known where to start. It sure looks like Think C + Amend might be a good place to begin!

Edit: have we hugged it to death? I can initiate a connection but never get a login prompt.

There are some really good Retro68 code examples out there as well. I started compiling a list here, including a couple of my own: https://henlin.net/2021/12/21/Cool-Retro68-projects/

As a few other folks have said, the inside Macintosh books are extremely valuable references for Mac-specific code. I keep pdfs of them open the whole time I’m working on my Macintosh projects.