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<p>Reference the opener, its properties and functions via the links below.</p>
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<li>Clicking <a href="#" onclick="alert(window.opener)">here</a> should alert "[object Window]"</li>
<li>Clicking <a href="#" onclick="alert(window.opener.aVar)">here</a> should alert "some value"</li>
<li>Clicking <a href="#" onclick="window.opener.externallyCalled()">here</a> should alert "hello from opener"</li>
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