 the union of the features declared in
            the usage contract.</p>

            <p>For example, consider a composite component that
            implements the functionality of a "login panel".  Such a
            component would likely have two text fields and one button.
            The user of such a component might like to do one or more of
            the following.</p>

            <ul>

	  <li><p>Be able to listen for the <code>ActionEvent</code>
            on the button.</p>

           <p>I