<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd"> <html> <body> <div> <h3> <a href="https://html.spec.whatwg.org/multipage/parsing.html#parse-error-incorrectly-closed-comment"> Incorrectly closed comment without a correctly closed comment </a> </h3> <div> <!--incorrectly closed comment--><span id="under-test">whatwg guidance is that this should be a DOM node</span> </div> </div> </body> </html>