Documentation
Elements
- <a>
- <altRepresentation>
- <aside>
- <assessment>
- <author>
- <backcover>
- <blockquote>
- <body>
- <bodymatter>
- <caption>
- <code>
- <cover>
- <dd>
- <dl>
- <document>
- <dt>
- <em>
- <figure>
- <figureGroup>
- <frame>
- <frontcover>
- <frontmatter>
- <hd>
- <img>
- <indicators>
- <input>
- <jacketcopy>
- <legend>
- <li>
- <line>
- <linegroup>
- <list>
- <meta>
- <metadata>
- <note>
- <noteRef>
- <p>
- <pagebreak>
- <poem>
- <publication>
- <pullquote>
- <rearmatter>
- <section>
- <source>
- <span>
- <sub>
- <subtitle>
- <sup>
- <table>
- <tbody>
- <td>
- <tfoot>
- <th>
- <thead>
- <title>
- <tr>
<sub>
The <sub> element marks subscript text — typographically lowered below the baseline. Use for chemical formulas, mathematical indices, and similar.
Notes
- For chemical formulas with complex notation (charges, isotopes, full equations), use
<m:math>or<formula>instead. - For footnote references in running text, use
<noteRef>rather than a<sup>wrapping a number.
Examples
<p>Bij de verbranding van bruinkool komt heel veel CO<sub>2</sub> vrij.</p>Combined sub and sup
<p>Een typisch ionische verbinding is Mg<sup>2+</sup>SO<sub>4</sub><sup>2−</sup>.</p>