title: HTML5 `<link rel="shortcut icon" />`
body: <p>The <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#attr-hyperlink-rel" rel="nofollow noreferrer">WHATWG document</a> for HTML5 says that the <code>rel</code> attribute must contain values that are space-separated, and then it gives a table of allowed values.</p>
  <blockquote>
  <p>The attribute's value must be a set of space-separated tokens. The <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/links.html#linkTypes" rel="nofollow noreferrer">allowed keywords and their meanings</a>...</p>
  </blockquote>
  <p>The list of allowed keywords for the <code>link</code> element does not include <code>shortcut</code>, but it does include <code>icon</code>. So I'm looking at the all-too-well-known tag</p>
  <pre><code>&lt;link rel=&quot;shortcut icon&quot; href=&quot;/favicon.ico&quot; /&gt;
  </code></pre>
  <p>and wondering if it is HTML5-compliant. Should I remove the keyword <code>shortcut</code> from this tag throughout my Website?</p>