"html5" can refer to just the core markup specification, or it can refer to an entire collection of specifications for modern javascript APIs[1] in various stag

"html5" can refer to just the core markup specification, or it can refer to an entire collection of specifications for modern javascript APIs[1] in various stages of completion. No browser implements all those specifications. [1]http://upload.wikimedia.org/wikipedia/commons/f/f7/HTML5-APIs-and-related-technologies-by-Sergey-Mavrody.png http://upload.wikimedia.org/wikipedia/commons/f/f7/HTML5-API...