Perform experiments
XHTML Difference with HTML 4 XHTML 1.0 The Extensible HyperText Markup Language (Second Edition) Browser Support for Fonts URL Encoding XHTML 1.0 Namespace XHTML 2.0 (Working Draft) Table of XHTML Elements linking to documentation of each element XHTML Attribute List (with deprecation information) Free HTML Checker XHTML/HTML4 Deprecated Elements Download Coffeecup HTML Kit Editor W3C Image Map Specification ISO Latin-1 Character Codes
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