<sub> & <sup>
tag
<sub> renders text as subscript; <sup> renders text as superscript. Used in math and chemistry.
Syntax
<sub>subscript</sub> <sup>superscript</sup>
Example
html
<p>H<sub>2</sub>O is the chemical formula for water.</p>
<p>E = mc<sup>2</sup> is Einstein's famous equation.</p>