Small print. For a more meaningful, rather than presentational, point-of-view, this should be interpreted as a side comment or the “small print” details you might find in a legal document, rather than, simply, “print that is small”.
<p>A blind <u>loin</u> (<i>Panthera leo</i>) asked what the 2 in E=MC<sup>2</sup> and H<sub>2</sub>O meant.</p>
<p>She went on to ask if it was supposed to be <b>emphasized</b> in some way.</p>
<p>She reached the conclusion that this HTML is, in fact, <s>presentational, rather than</s> meaningful.</p>
<p>Disclaimer: <small>Most of this page, on most levels, it mostly nonsense.</small></p>