I feel stupid... my desire is to write HTML5 using XML and I can't get ANYTHING to work, for instance:
<!DOCTYPE html>
<html>
<head><title>ABC</title></head>
<body>DEF</body>
</html>
actually shows ABC on the browser canvas!
What am I doing wrong? (using FireFox 3.5.8)
You need to declare a namespace on the root element. For HTML that is http://www.w3.org/1999/xhtml. A DOCTYPE is not needed in XML.
I’m on Firefox 3.5.2. I saved the code in your question as a file (abc.html) and opened it in Firefox. “ABC” didn’t show on the browser canvas.
What mimetype are you serving it with? What file extension?