• Arts
• Business
• Computers
• Games
• Health
• Home
• Kids and Teens
• News
• Recreation
• Reference
• Regional
• Science
• Shopping
• Society
• Sports

Markup Languages

• 541
• XHTML 1.0 (Second Edition) Specification
• Official W3C specification for the markup language.

• 542
• XHTML Basic
• A W3C specification for a minimal subset of Modular XHTML.