And for people who like such things, i raise a monster (dreamt on by an European telecommunications committee) that i fairly enjoyed working on 30+ years ago (y

And for people who like such things, i raise a monster (dreamt on by an European telecommunications committee) that i fairly enjoyed working on 30+ years ago (you enjoy such things when you're young and new to the tech and it was the time when seemingly everybody was excited about diagramming/CASE/etc. :) - CCITT Z.100 SDL - diagramming language originally for the telecommunication systems, kind of an actor model with channels, messages, etc., all formally specified and diagrammed (less practical spiritual cousin of Erlang) https://guminski.net/pg/Z100.pdf https://guminski.net/pg/Z100.pdf