Type text in the box below. Include some math: enter MathML as MathML tags, and wrap TeX in $...$ or $$...$$ delimiters (or \(...\) and \[...\]), and AsciiMath in `...` delimiters. The text you enter is actually HTML, so you can include tags if you want; but this also means you have to be careful how you use less-than signs, ampersands, and other HTML special characters within your math (surrounding them by spaces should be sufficient).