A DOCTYPE (short for “document type declaration”) informs the validator which version of (X)HTML you’re using, and must appear at the very top of every web page. In this quick tip I’ll be going through the valid doctypes that you should use at the start of your document.
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Category Archives: HTML
Quick tip: Doctype
Differences between HTML5 and HTML4
From the W3C HTML Working Group, an excellent summary of the significant differences between HTML 4 and the current draft of HTML 5. None of this is final, and the document itself is under active development, but it’s a very worthwhile read nonetheless.
http://dev.w3.org/cvsweb/~checkout~/html5/html4-differences/Overview.html