How can I view the object hierarchy in XCode 4 like XCode 3 does?

In Information Builder, I need to view/navigate all the objects in a the XIB and like to use the obj开发者_开发问答ect hierarchy view in Xcode 3. However, in XCode 4, it just show the top level objects, but not the child objects. How can I view them all in XCode 4?

---

Thanks for the other answers, that helped me. For future answer seekers, it looked a bit different for me in xcode 4.2. Pressing the grey"play" button in the bottom left corner poped out the hierarchy.

---

Click on the arrow in the lower left of the gutter that shows the objects

---

You can also simply drag the object view window from the right side of the window. It will then show all the objects and their hierarchy.