title: Is it necessary to have a heading of <section> in HTML5
body: <p>Is it necessary to have a heading of <code>&lt;section&gt;</code> in HTML5 like mentioned here <a href="http://blog.whatwg.org/is-not-just-a-semantic" rel="noreferrer">http://blog.whatwg.org/is-not-just-a-semantic</a></p>
  
  <p>Sometime on a page we have some elements which are related and can be combined in a <code>&lt;section id="semantic name"&gt;</code> instead <code>&lt;div id="semantic name"&gt;</code> But we don't have any Heading for that..</p>
  
  <p>Is it OK to use <code>&lt;section&gt;</code> without having <code>&lt;h1&gt;</code>, <code>&lt;h2&gt;</code>, <code>&lt;h3&gt;</code> inside</p>