title: What is AgHost.BackgroundTask as background task in Windows Phone Silverlight 8.1?
body: <p>When I create a new Windows Phone SIlverlight 8.1 app, there is a background task in the manifest:</p>
  
  <pre><code> &lt;Extension Category="windows.backgroundTasks" EntryPoint="AgHost.BackgroundTask"&gt;
        &lt;BackgroundTasks&gt;
           &lt;Task Type="systemEvent" /&gt;
       &lt;/BackgroundTasks&gt;
  &lt;/Extension&gt;
  </code></pre>
  
  <p>What is it? Is it safe to remove? The only reference I could find is not very helpful <a href="http://msdn.microsoft.com/en-us/library/windowsphone/develop/dn642084.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/windowsphone/develop/dn642084.aspx</a></p>