title: How to enable/ disable "Automatic Reference Counting"?
body: <p>Using Xcode 4.2, how can one enable/disable  "Automatic Reference Counting"?</p>
  
  <p><strong>ANSWERED</strong> Under Build Settings, flip "yes" and "no" depending whether you want ARC enabled.</p>
  
  <p><img src="https://i.stack.imgur.com/rMdsL.png" alt="enter image description here"></p>