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In this hour, you learned about one of the powerful new user interface features of Mac OS X Lion, the Popover. Popovers provide a means for displaying contextual content anchored to the related content in another view. This provides a wide assortment of possibilities for creating compelling applications as well as something familiar to users of iPad applications that also use Popovers.
You learned how to create Popovers and how to control, configure, and customize them. Finally, you created an application that harnesses the power of Popovers and you created detachable Popovers.
After completing this hour, you have yet another tool in your toolbox for building amazing Mac OS X Lion applications.