TeX in real world production

TFW a paper has the followng author comment:

%%% DO NOT CHANGE THE LINEBREAKS IN THESE, SO HELP YOU GOD.

You'll never guess what happened next.

Kuzey Kıbrıs Türk Cumhuriyeti aka Turkish Republic of Northern Cyprus - Girne aka Kyrenia

Сетунь ВС (Setun Web Simulator)
Software by Trinarygroup
In collections: Basically computer science, History, Unusual computers
URL: trinary.ru/projects/setunws/

You really get an appreciation for the noncommutativity of 3d rotations when you've pulled a muscle in your lower back.

Earliest Uses of Various Mathematical Symbols
Web page by Jeff Miller
In collections: History, Notation and conventions
These pages show the names of the individuals who first used various common mathematical symbols, and the dates the symbols first appeared. The most important written source is the definitive A History of Mathematical Notations by...
URL: jeff560.tripod.com/mathsym.htm

A big list of unlikely or surprising Turing-complete systems: gwern.net/Turing-complete, via metafilter.com/183095/On-havin

My favorite: SVG is Turing-complete because it can be used to (slowly) simulate Rule 110 (and one hopes the weird boundary conditions needed to make Rule 110 Turing complete): github.com/tom-p-reichel/svg-i

I hav com up wit a gre tim sav dev. As wel as rou num to thr sig fig, I hav sta rou all my wor to thr sig let. Wit the spa sav by thi met I can fit muc mor int eac too, lea roo for ext con, lik thi lov poe:

Ros are red,
Vio are blu,
I lik to go
For a dip in the poo

I want a text editor, not a word processor. I've seen what a food processor does to food ...

A history of mathematical notations
Book by Florian Cajori
In collections: History, Notation and conventions, Lists and catalogues
URL: maths.ed.ac.uk/~aar/papers/caj
I guess I'll just write my own then, since I only need $$J_1$$