title: Is it allowed to use other tags inside <title>?
body: <p>Is it correct practice or valid syntax to use other tags inside a <code>&lt;title&gt;</code>?</p>
  
  <p>An example for multi-language title</p>
  
  <pre><code>&lt;html lang=en&gt;
  &lt;title&gt;Some title in English and a &lt;i lang=fr&gt;word in French&lt;/i&gt;&lt;/title&gt;
  </code></pre>