title: Xcode 4: Keyboard shortcut for switching Assistant Editor to Tracking (Automatic) mode?
body: <p>I like using the Assistant Editor in Xcode 4. I frequently Option-Click files to open them in the Assistant Editor, or use Open Quickly (Command-Shift-O), and hold the option key when selecting a file to open it in the Assistant Editor.</p>
  
  <p>Both of these actions switch the Assistant Editor to Manual mode. Is there a keyboard shortcut to switch the Assistant Editor back to Tracking mode (also called Automatic)? In tracking mode it automatically shows the counterpart, e.g. the corresponding header/implementation file for the file in your main editor. know I can select Automatic mode it with the mouse on the Assistant Editor Jump bar, but I really want a keyboard shortcut to do this. </p>