[simoncozens]

It doesn't, yet; TeX is very good at that, so if that's a need you have, stick with TeX. I'm not trying to corner the whole typesetting market!

However, it shouldn't be difficult (especially now that MathJax is in Javascript, a language not a million miles away from Lua) to add support for maths typesetting. Patches welcome!

[jimhefferon]

Very nice system, Simon. Can I ask if you have given math any thought? Obviously TeX does great with math but there are still some things that many people think could bear improvement, with thirty years of hindsight (including, as I understand it, additional math categories and omitting the restriction on just a few fonts).