title: What's the Difference between "Content Values" and "Content Objects"
body: <p>I'm exploring bindings right now, and have an NSPopUpButton - </p>
  
  <p>It presents me a number of options for bindings under Value Selection - <code>Content</code>, <code>Content Objects</code>, <code>Content Value</code>s, and then <code>Selected Object</code>, <code>Selected Value,</code> and <code>Selected Tag</code>. Could someone please explain the difference between these?</p>