title: What are the two options that come with the core animations beginAnnimations method?
body: <p>I was wondering what they mean by:  </p>
  
  <pre><code>[CustomView beginAnimations:@"whatIsThis" context:whatIsThis];  
  </code></pre>
  
  <p>I am just wondering what those who things do and how I would use them?<br>
  Please help!</p>