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HTML 5 adds a lot of new features to the HTML specification. And what's even better, there is already some limited browser support for these new features. If there is a feature you're interested in, watch the WHATWG Wiki Implementations page for information on browsers that support various parts of the specification. HTML 5 New Doctype and Charset The nice thing about HTML 5 is how easy it is to impelement. You use the HTML 5 doctype, which is very simple and streamlined: