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In section 6.4 Void Elements, I think there are 2 more elements in HTML5 that should be in the list of void elements. <wbr> and <track> The content model of these 2 elements are both empty in HTML5, but why are they not in the list? No explanations are given there. I am asking this because I want to know whether I can use minimised form (<wbr /> <track />) for these elements or not in the polyglot markup.
Added the two elements, per this request. Thanks for catching this.