    <a href="Data.html" onclick="_gaq.push(['_trackEvent', 'Sidenav', 'clicked', 'data/Data']);">Data</a> 
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                <a href="YAML-front-matter.html" onclick="_gaq.push(['_trackEvent', 'Sidenav', 'clicked', 'data/YAML front matter']);">YAML front matter</a> 
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