title: Xcode 4 + split screen feature
body: <p>Xcode 3 had a very good feature of horizontal and vertical split screen wherein you could have worked on multiple files in the same window. xCode 4 has a split screen feature in the Editor but I think there are two things lacking:</p>
  
  <ol>
  <li>Inability to switch files in the second window through project navigator (left pane).</li>
  <li>Cannot split the main screen horizontally.</li>
  </ol>
  
  <p>Any ideas on how this can be achieved?
  <img src="https://i.stack.imgur.com/zDWeK.png" alt="The split feature"></p>
  
  <p>Thanks,
  Raj</p>