XHTML

XHTML (Extensible HyperText Markup Language) is an evolution of the HTML markup language into a valid XML document.

[edit] 1 References

• XHTML 1.1 Specification

[edit] 1.1 O'Reilly Safari Library

• HTML & XHTML: The Definitive Guide, 6th Edition
• HTML, XHTML, & CSS, Sixth Edition: Visual QuickStart Guide