Penguin
Annotated edit history of XHTML version 4, including all changes. View license author blame.
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3 AristotlePagaltzis 1 [XHTML] 1.0 is an [XML]-based reimplementation of the [SGML]-based [HTML] 4.0 specification. Many [HTML] files are not WellFormed [XHTML], but can usually be converted relatively simply to [XHTML] 1.0. Those that can't usually have UndefinedSemantics anyway.
2 StuartYeates 2
4 AristotlePagaltzis 3 [XHTML] 1.1 is much stricter than the 1.0 specification and a lot closer to the spirit of [XML] so it can finally bring many cool features to the table (no pun intended). By being [XML] it can take advantage of the semantics of other [XML] languages discard much of the therefor redundant features of [HTML] (and [XHTML] 1.0). F.ex, using [XLink] semantics, images can be included in a documented using f.ex the <tt>p</tt> (paragraph) tag, rendering the <tt>img</tt> tag superfluous. (In fact, pretty much any tag can be used for the purpose.)