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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<a target="_blank" rel="noopener" href="https://example.com/browser/browser/base/content/test/tabs/blank.html" id="link_noopener_examplecom">Go to example.com</a>
<a target="_blank" rel="opener" href="https://example.com/browser/browser/base/content/test/tabs/blank.html" id="link_opener_examplecom">Go to example.com</a>
<a target="_blank" rel="noopener" href="https://example.org/browser/browser/base/content/test/tabs/blank.html" id="link_noopener_exampleorg">Go to example.org</a>
<a target="_blank" rel="opener" href="https://example.org/browser/browser/base/content/test/tabs/blank.html" id="link_opener_exampleorg">Go to example.org</a>
</body>
</html>