The very short tl;dr is there were a couple main contentions: * Continuing work on HTML at all, instead of furthering work on XHTML + XForms + etc. * Certain

The very short tl;dr is there were a couple main contentions: * Continuing work on HTML at all, instead of furthering work on XHTML + XForms + etc. * Certain decisions, especially around accessibility & internationalisation, at a point where the editor (then Hixie) practically controlled the decision making.