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<wiki>
  <body>&lt;p&gt;Many of Biff&amp;#8217;s Core [[Behaviors]] can be nested, meaning that you can apply further behaviors to apply when some event happens. An example of this is the [[Listener]] tag.&lt;/p&gt;
&lt;pre&gt;&amp;lt;Selector match=&quot;Button&quot;&amp;gt;
    &amp;lt;Listener event=&quot;click&quot;&amp;gt;
        &amp;lt;Trace message=&quot;clicked a button&quot;/&amp;gt;
    &amp;lt;/Listener&amp;gt;
&amp;lt;/Selector&amp;gt;
&lt;/pre&gt;</body>
  <created-at type="datetime">2009-11-26T21:47:22-08:00</created-at>
  <id type="integer">166366</id>
  <permalink>nested-behaviors</permalink>
  <repository-id type="integer">139115</repository-id>
  <title>Nested Behaviors</title>
  <updated-at type="datetime">2009-03-23T07:24:45-07:00</updated-at>
  <user-id type="integer">16249</user-id>
</wiki>
