<!DOCTYPE html> <meta name=timeout content=long> <title>HTML entities for various XHTML Doctype</title> <link rel=help href="http://w3c.github.io/html/xhtml.html#parsing-xhtml-documents"> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <iframe id="test" src="support/xhtml-mathml-dtd-entity.htm"></iframe> <script> onload = () => document.getElementById("test").contentWindow.run( ["application/xhtml+xml", "-//W3C//DTD XHTML 1.1//EN", "foo", "XHTML1.1"]); </script>