title: Best way to use "Next" version of Return button on UITextField to move to next UITextField
body: <p>I use the "Next" value for the "Return Key" to get the Next button in place of the Done button, but (obviously) pressing it doesn't automatically move to the next UITextField in my view. </p>
  
  <p>What's the right way to do this? On a larger topic, what are some tips for properly building forms in the iPhone SDK?</p>