behavior for < iOS 4.0?
<p>OK, I understand that [UIView beginAnimations:context:] is not recommended for iOS 4.0 and above.  </p>

<p>If you go with the recommendation and use [UIView animateWithDuration:animations:], will the app be broken if run on iOS &lt; 4.0?  </p>

<p>In other words, the docs are not clear on whether the new-and-improved will work below 4.0.</p>

<p>If it doesn't, why wouldn't one just stick with the old approach for now?</p>
