I want to be able to enter equations and other mathematics notation into a question body here on Stack Overflow. I haven't found anything about that directly, but I have seen stuff about using HTML for all or part of the question body, and I know there are facilities for entering math into HTML.
Also, I'm very familiar with using LaTeX to describe equations and other math. I suppose it's too much to hope for to wish that I could enter LaTeX directly into questions and answers here on Stack Overflow.