This is not the HTML5 you're looking for, or at least, not all the HTML5 you're looking for. http://www.w3.org/TR/html5/ http://www.w3.org/TR/html5/ is missing

This is not the HTML5 you're looking for, or at least, not all the HTML5 you're looking for. http://www.w3.org/TR/html5/ http://www.w3.org/TR/html5/ is missing various things you expect in HTML5 (e.g., web storage, web sockets, etc.). These items are in the WHATWG living standard: http://www.whatwg.org/specs/web-apps/current-work/multipage/ http://www.whatwg.org/specs/web-apps/current-work/multipage/ For differences, see http://www.whatwg.org/specs/web-apps/current-work/multipage/introduction.html#how-do-the-whatwg-and-w3c-specifications-differ http://www.whatwg.org/specs/web-apps/current-work/multipage/...?