I have long wondered why there is no piece of software that typesets ASCII math -like people used to write before tex.
In my view tex is great but $ signs for instance should really be facultative. Even many equations should naturally be displayed by the word processor. I'd like to write say: "Let (x,y)\in R^2 be a solution of x^2+bxy+x=0 y^4-yx=0" and have it typeset in a reasonable way as if I had put the dollar signs, the \mathbb, and the equation display in latex. I do not need full control of my output I just want it to look like reasonably written math.
More generally what is the fastest/shortest way to type math to get a tex-like output?