area",
  "tfoot",
  "th",
  "thead",
  "time",
  "title",
  "tr",
  "u",
  "ul",
  "var",
  "video",
  "wbr",
  "xmp",
].forEach(tagname=>{
	mk[tagname] = (...args) => mk(tagname, ...args);
});

function* nodesFromChildList(children) {
	for(const child of children.flat(Infinity)) {
		if(child instanceof Node) {
			yield child;
		} else {
			yield new Text(child);
		}
	}
}
function append(el, ...children) {
	for(const child of nodesFromChildList(children)) {
		if(el instanceof Node) el.appendChild(child);
		