Can fellow readers make a short pitch regarding why someone who is not familiar with Oberon would be interested in it today (other than historical curiosity)?
It's not something you'd want to use today, but it's certainly worth studying. It's a wonderful lesson in keeping complex systems as simple as possible.
Possibly STEPs?: https://tinlizzie.org/VPRIPapers/tr2012001_steps.pdf
Oberon is able to run on actual hardware and works in various emulators.
I do love the research they did for STEPS though, it's unfortunate it didn't result into an actual release.
https://cr.yp.to/bib/1995/wirth.pdf
Here's a plain text version on my own blog:
https://liam-on-linux.dreamwidth.org/88032.html
Michael Franz' classic Oberon -- the Overlooked Jewel is also short and highly readable:
https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.90...