We already have this: http://www.whatwg.org/specs/web-apps/current-work/multipage/rendering.html#rendering http://www.whatwg.org/specs/web-apps/current-work/mul

We already have this: http://www.whatwg.org/specs/web-apps/current-work/multipage/rendering.html#rendering http://www.whatwg.org/specs/web-apps/current-work/multipage/...