Changes to Step #2

Edit by Brett Hartt

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[* black] Opening up the AR.Drone doesn't even require a screwdriver.
[* black] The upper case is attached by a magnet in the rear case.
[* black] Much of the AR.Drone's body is made of expanded polystyrene foam[http://en.wikipedia.org/wiki/Polystyrene|polystyrene foam], a common substance that is both extremely light and easily manufactured into complex shapes.
[* black] Much of the AR.Drone's body is made of expanded polystyrene foam[http://en.wikipedia.org/wiki/Polystyrene|polystyrene foam], a common substance that is both extremely light and easily manufactured into complex shapes.