Subscript
A subscript is text that is printed below the line. It is frequently used in chemical and mathematical formulas.
Syntax
- XDITA
-
<sub>
- HDITA
-
<sub>
- MDITA (extended profile)
-
There is no specific support in the MDITA core profile. If needed, use an HDITA snippet.
Rendering expectations
The subscript component is typically rendered lower in relationship to the surrounding text and in a smaller font.
Attributes
The available attributes vary based on the authoring format:
- XDITA and HDITA
- The following attributes are available on this element: localization attributes, universal
attributes, and
@keyref
. - MDITA
- For the MDITA core profile, the equivalent
of the XDITA
@keyref
attribute is supported. For the MDITA extended profile, attributes can be specified by using the HDITA representation.
Examples
This section is non-normative.
The following example demonstrates the use of a subscript in an XDITA topic.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE topic PUBLIC "-//OASIS//DTD LIGHTWEIGHT DITA Topic//EN" "lw-topic.dtd">
<topic id="food-additives">
<title>Food Additives for pH Control</title>
<body>
<p>In very rare occasions, our Sensei Sushi kitchen lab technicians can use Sulfuric Acid, FCC (H<sub>2</sub>SO<sub>4</sub>) to control pH during processing. Ask your supervisor for more information.</p>
</body>
</topic>
The following example demonstrates the use of a subscript n in an HDITA topic.
<!DOCTYPE html>
<html>
<head>
<title>Food Additives for pH Control</title>
</head>
<body>
<article id="food-additives">
<h1>Food Additives for pH Control</h1>
<p>In very rare occasions, our Sensei Sushi kitchen lab technicians can use Sulfuric Acid, FCC (H<sub>2</sub>SO<sub>4</sub>) to control pH during processing. Ask your supervisor for more information.</p>
</article>
</body>
</html>