Used to mark text that should appear lower than the baseline and slightly smaller; inferior or subscript text.
Any combination of:
<addr-line>, <aff>, <article-title>, <attrib>, <award-id>, <bold>, <chapter-title>, <chem-struct>, <collab>, <comment>, <compl>, <copyright-holder>, <copyright-statement>, <def-head>, <disp-formula>, <element-citation>, <ext-link>, <full>, <funding-source>, <gov>, <inline-formula>, <inline-supplementary-material>, <institution>, <intro>, <italic>, <label>, <license-p>, <main>, <meta-value>, <mixed-citation>, <monospace>, <named-content>, <on-behalf-of>, <overline>, <p>, <part-title>, <preformat>, <related-article>, <related-object>, <role>, <roman>, <sans-serif>, <sc>, <series>, <sig>, <sig-block>, <source>, <std>, <strike>, <styled-content>, <sub>, <subtitle>, <sup>, <supplement>, <target>, <td>, <term>, <term-head>, <textual-form>, <th>, <title>, <trans-source>, <trans-title>, <underline>, <verse-line>, <xref>
An ordinary subscript:
<standard>
<front>
<iso-meta>...</iso-meta>
</front>
<body>
...
<sec>
<label>4.1</label>
<title>Univariate symbols</title>
<p>The symbols used when there is only one quality
characteristic in the class are as follows.</p>
<def-list list-type="symbol-list">
<def-item>
<term><italic>f<sub>s</sub></italic></term>
<def>
<p>factor that relates the maximum sample standard
deviation (<abbrev>MSSD</abbrev>) to the difference between
<italic>U</italic> and <italic>L</italic>
(<xref rid="anx-d">see Annex D</xref>)</p>
</def>
</def-item>
</def-list>
...
</sec>
</body>
...
</standard>
As shown formatted above, a subscript and superscript in a “stacked” arrangement:
...
<p>The <italic>Escherichia coli argU</italic> gene encodes a minor arginine
tRNA, tRNA<sup arrange="stack">Arg</sup><sub arrange="stack">UCU</sub>,
which corresponds to the rare codon AGA and possibly AGG ...</p>
...
JATS-format0.ent