The <sub> subscript and <sup> superscript elements are used to specify text that is smaller and positioned differently from the rest for symbol and math equation markup. The uses are numerous as the examples below demonstrate, these are just a few real world uses for these elements.
<p> I drink H<sub>2</sub>O all day. </p> <p> E=mc<sup>2</sup> </p> <p> I was raised on 83<sup>rd</sup> Street. </p> <p> DevelopPHP<sup style="font-size:9px;">TM</sup> </p>open in code editor