There is UnicodeMath[1], which was developed by Microsoft and is the default representation used by the Word equation editor. It looks like this: e=lim┬(n→∞)⁡

There is UnicodeMath[1], which was developed by Microsoft and is the default representation used by the Word equation editor. It looks like this: e=lim┬(n→∞)⁡(1+1/n)^n f(x)=∑_(k=-∞)^∞〖c_n e^(ⅈkx)〗 ∫_(-∞)^(+∞)〖exp⁡(-a/2 x^2) ⅆx〗=√(2π/a) I find it quite readable, even for quite complicated formulae like the above. You can also replace the unicode symbols with Latex-style escape strings, like \sum or \below. [1]: https://unicode.org/notes/tn28/UTN28-PlainTextMath-v3.1.pdf https://unicode.org/notes/tn28/UTN28-PlainTextMath-v3.1.pdf