title: How to show project explorer pane on right side of screen
body: <p>I recently switched to Wing Pro from Visual Studio.  Today my Wing IDE opened without the project explorer pane on the right side showing -- it's called project explorer in Visual Studio, I think it's called the same in Wing.  It's the listing of all project files.</p>
  <p>I have looked all over the documentation and options but I haven't found where to make it show again.</p>
  <p>Thanks for any help.</p>