XHTML modules provide means for subsetting and extending XHTML. XHTML modules are used for creating new flavors of XHTML, such as XHTML Basic for mobile devices.
Core modules are
* Structure (html, head, body, title...) * Text (h1, h2, h3... p, pre...) * Hypertext (a) * List (ul, li...)Other modules include applet, image, forms and basic forms.
Modularization of XHTML - W3 Consortium. In addition to interesting view on modules, this document contains all of the actual tag definitions.External Links