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16. XHTML > XHTML 1.1

XHTML 1.1

In May 2001, the W3C released an updated XHTML standard, XHTML 1.1. While most standards expand upon their previous versions, XHTML 1.1 takes the unusual step of defining a more restrictive version of XHTML. If you think of XHTML 1.0 as unwieldy, picky, and time-consuming, you’ll find XHTML 1.1 even more so. In our opinion, XHTML 1.1 is an example of the standards process taken to absurd levels, defining a standard that may be academically pure but is essentially unusable.

Differences in XHTML 1.1

XHTML 1.1 begins with the XHTML 1.0 strict DTD and makes a few modifications. By supporting only the strict version of XHTML 1.0, Version 1.1 eliminates all deprecated elements and all browser extensions still in common use on the Web. It also makes the following minor changes:


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