14. XHTML Presentation Module

This section is normative.

This module defines elements, attributes, and a minimal content model for simple presentation-related markup:

When this module is used, the hr element is added to the Block content set of the Text Module. In addition, the sub and sup elements are added to the Inline content set of the Text Module.

Implementation: DTD

14.1. The hr element

The hr element places a horizontal line in the document.

14.2. The sub element

The sub element indicates that its contents should be presented as a subscript of the text baseline.

Many scripts (e.g., French) require superscripts or subscripts for proper rendering. The sub and sup elements should be used to markup text in these cases.

      H<sub>2</sub>O
      E = mc<sup>2</sup>
      <span xml:lang="fr">M<sup>lle</sup> Dupont</span>

14.3. The sup element

The sup element indicates that its contents should be presented as a super-script of the text baseline.

Many scripts (e.g., French) require superscripts or subscripts for proper rendering. The sub and sup elements should be used to markup text in these cases.

      H<sub>2</sub>O
      E = mc<sup>2</sup>
      <span xml:lang="fr">M<sup>lle</sup> Dupont</span>