<sub>
The <sub> element indicates that text should appear with subscript
highlighting, or placed lower in relationship to the surrounding text. Subscripted
text is
often a smaller font than the surrounding text. Formatting might vary depending on your output process. This element is part of the highlighting domain. Use this element only when a more
semantically appropriate element is not available.
Note
Style sheets can be used to format the
<sub> element differently, just like any other element
can be restyled. Thus, it is not the case that content in
<sub> elements will necessarily be rendered as
subscript.
Content models
See appendix for information about this element in OASIS document type shells.
Inheritance
+ topic/ph hi-d/sub
Example
<p>The power produced by the electrohydraulic dam was 10<sup>10</sup> more than the older electric plant. The difference was H<sub>2</sub>O.</p>
Attributes
The following attributes are available on this element: Universal attribute group and @outputclass.