Xcode 4.5 + UIScrollView: Cannot see struts and springs (OSX 10.8 Mountain Lion)

Question

Disclaimer: Brand new to iOS dev. Go easy on me.

Got a funny situation in Xcode 4.5. My Size Inspector looks like this:

Answer 1

Same answer as the other two, but for projects using storyboards: instead of opening a xib file, you can simply open the storyboard to see the "Use Autolayout" checkbox in the inspector panel.