Lewis is a typeface designed for mathematical typesetting, specifically for the TeX typesetting system. It consists of 3 text styles (Roman, Bold, Italic) and 3 math styles (Math Italic, Greek, Blackboard) for use as variables. The text Italic relates to the Roman while the Math Italic stand out with its cursive construction. Likewise, the Greek differentiate easily from latin characters. The Blackboard inlines are adapted for text sizes with their wide and open cut. Lewis features many size variants and extending shapes, ideal in displayed equations.