remember XHTML2 ? XFORMs , yeah,it was a pain to write but FULLY EFFIN extendable ... so much that browser vendors did not want to implement these stuff and cam

remember XHTML2 ? XFORMs , yeah,it was a pain to write but FULLY EFFIN extendable ... so much that browser vendors did not want to implement these stuff and came back with hacks like web components and shadow dom making everything even more painfull to write and extend...So there was an opportunity,it was missed.