title: What value needs to passed for X-UA-Compatible meta tag's content attribute to set document mode as 5?
body: <p>Working on a legacy application, one of the UI functionality is breaking in IE11. While trying emulating different docModes, it's working fine for doc mode = 5 and UserAgent = IE 11</p>
  <p>I Want to set this behavior through the application code, I have tried this meta tag at the top of the page-</p>
  <pre><code>&lt;meta content=&quot;IE=5&quot; http-equiv=&quot;X-UA-Compatible&quot;&gt;
  </code></pre>
  <p>But unable to get the same behavior. Am I missing something?</p>
  <p>As per <a href="https://validator.w3.org/" rel="nofollow noreferrer">W3 Validator</a>,</p>
  <p><em>Error: A meta element with an http-equiv attribute whose value is X-UA-Compatible must have a content attribute with the value IE=edge.</em></p>
  <p>In that case what should be the value of <strong>http-equiv</strong> and <strong>content</strong> for meta tag to set that behavior?</p>
  <p>EDIT: Adding the HTML code snippet</p>
  <pre><code>&lt;!DOCTYPE HTML null null null&gt;
  &lt;HTML&gt;
      &lt;head&gt;
          &lt;meta content=&quot;IE=5&quot; http-equiv=&quot;X-UA-Compatible&quot;&gt;
      &lt;/head&gt;
  </code></pre>