title: What is the difference between outlet connection and action connection?
body: <p>When I try to create a connection between xib and the file's owner, there are several types to choose from:</p>
  
  <ul>
  <li>outlet connection</li>
  <li>action connection</li>
  <li>outlet collection connection</li>
  </ul>
  
  <p>What are the differences between all of those?</p>