[mci]

1. Needs (2016) in the title.

2. Even by 2016, pdfTeX had been largely superseded by LuaTeX.

3. The author bizzarely links to "the mess" of the literate source of TeX the program as a WEB file rather than as a typeset document.

4. AIUI, the source code of the TeX engine has nothing/very little to do with adding tags to PDFs, which it is the job for LaTeX packages. Admittedly, understanding and writing their source code is a rarer skill than reading the literate source of TeX.

[ketzu]

> 2. Even by 2016, pdfTeX had been largely superseded by LuaTeX.

Is that true? My experience was that pdftex is by far the most used one, but while thinking about it, I noticed I have zero data to back that up.

[jimhefferon]

The overwhelming majority of people writing today use pdflatex. But at this point lualatex is pretty fast, and is starting to accumlate packages that leverage it to do good things. It is starting to build momentum.

[amai]

https://tex.stackexchange.com/questions/498987/generate-pdf-...