Many web sites, such as Wikipedia, display math that was formatted using LaTeX or TeX. For example, look in http://wikipedia.org for "Quadratic equation," and you will find an article that contains typeset math. To see how this math was created, locate the "Alternate text" field for the math formula. In the Firefox browser, this can be located by right-clicking on the math formula, and then choosing "Properties." The Alternate text field contains the TeX math markup.