Having problem understanding this passage in UIScrollView
<p>I have problem understanding this in the documentation for UIScrollView:</p>

<p>"The object that manages the drawing of content displayed in a scroll view should tile the content’s subviews so that no view exceeds the size of the screen. As users scroll in the scroll view, this object should add and remove subviews as necessary."</p>

<p>Isn't the point of using scroll view is to manage subview that is larger than the containing scroll view?</p>
