UITransitionView and UILayoutContainerView
<ol>
<li>What is <code>UITransitionView</code>?</li>
<li>What is <code>UILayoutContainerView</code>?</li>
<li>Will I get in trouble for adding subviews to them?</li>
</ol>

<p>They are the superviews of a <code>UITableView</code> which is inside of a <code>UINavigationController</code> which is inside of a <code>UITabBarController</code>.</p>

<p><code>UITransitionView</code> I got by asking for the superview of the table view.
<code>UILayoutContainerView</code> I got by asking for the superview of <code>UITransitionView</code>.</p>
