This section is normative.
The XHTML 1.1 document type is a fully functional document type with rich semantics. It is not, however, as varied in functionality as the XHTML 1.0 Transitional or Frameset document types. These document types defined many presentational components that are better handled through style sheets or other similar mechanisms. Moreover, since the XHTML 1.1 document type is based exclusively upon the facilities defined in the XHTML modules [XHTMLMOD], it does not contain any of the deprecated functionality of XHTML 1.0 nor of HTML 4. Despite these exceptions, or perhaps because of them, the XHTML 1.1 document type is a solid basis for future document types that are targeted at varied user agent environments.
The XHTML 1.1 document type is made up of the following XHTML modules. The elements, attributes, and minimal content models associated with these modules are defined in "Modularization of XHTML" [XHTMLMOD]). The elements are listed here for information purposes, but the definitions in "Modularization of XHTML" should be considered definitive. In the on-line version of this document, the module names in the list below link into the definitions of the modules within the current version of "Modularization of XHTML".
body, head, html, titleabbr, acronym, address, blockquote, br, cite, code, dfn, div, em, h1, h2, h3, h4, h5, h6, kbd, p, pre, q, samp, span, strong, varadl, dt, dd, ol, ul, liobject, paramb, big, hr, i, small, sub, sup, ttdel, insbdobutton, fieldset, form, input, label, legend, select, optgroup, option, textareacaption, col, colgroup, table, tbody, td, tfoot, th, thead, trimgarea, mapismap on imgmetanoscript, scriptstyle elementstyle attributelinkbaseXHTML also uses the Ruby Annotation module as defined in [RUBY]:
ruby, rbc, rtc, rb, rt, rpThere are no additional definitions required by this document type. An implementation of this document type as an XML DTD is defined in Appendix C.