Is an UIApplication object, UIWindow object, UIView object or any UIView subclass an "Responder object"?
<p>Am I right with my understanding, that an UIApplication object, UIWindow object, UIView object or any UIView subclass is an "Responder object"?</p>

<p>Here they say:</p>

<blockquote>
  <p>Responder objects in an application
  include instances of UIApplication,
  UIWindow, UIView, and all UIView
  subclasses.</p>
</blockquote>

<p>My english is not so well to understand what they mean by the "include". So they may "include" an Responder object, or the big group of famous Responder objects "includes" these  classes (or in other words: They belong to this group, called "Responder objects"). Any idea what this means really?</p>
