[Mxtetris]

More Multics resources here: https://www.multicians.org/biblio.html

[pjmlp]

Specially worthwhile to read is how Multics security model compares to UNIX.

https://multicians.org/b2.html

And how much safer PL/I was, even when compared against C17.

[trn]

Also see https://ban.ai/ and https://ban.ai/Multics/doc/