title: Is HTML5 valid XML?
body: <p>I am confused.  A co-worker turned me on to the possibility that tags ending in <code>/&gt;</code>, such as <code>&lt;br /&gt;</code> can still be used in HTML5.  I thought that only <code>&lt;br&gt;</code>-style could be used. All of the "talk" across the Internet is about using the latter.</p>
  
  <p>Could someone please explain this to me?  This seems very confusing and poorly documented.</p>
  
  <p>And this brings up another question: Is HTML 5 considered to be well-formed XML?</p>