title: IIS Compatability Mode setting for IE
body: <p>I am not sure whether this question has been asked previously or not, but here it is. We know we can set Compatibility mode setting for our site in IIS through HTTP response header like this</p>
  
  <pre><code> X-UA-Compatible    IE=&lt;Version&gt;
  </code></pre>
  
  <p>I have following questions for this:</p>
  
  <ol>
  <li><p>Which compatibility mode take preference, the one configured with IIS or the other inside Master Page?</p></li>
  <li><p>Can we put multiple Compatibility setting through IIS? If yes how? Comma separated like this ?</p>
  
  <pre><code>X-UA-Compatible    IE=&lt;Version1,Version2&gt;
  </code></pre>
  
  <p>or mutiple headers like this</p>
  
  <pre><code>X-UA-Compatible    IE=&lt;Version1&gt;
  X-UA-Compatible    IE=&lt;Version2&gt;
  </code></pre>
  
  <p>or in both ways?</p></li>
  <li>If multiple compatible settings are possible through IIS, which setting will have the precedence? for e.g, If I want my site to run in IE7 mode for IE10 and IE11 and IE8 mode for IE8 and IE9, will that be possible with point no. 2??</li>
  </ol>