You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <exturlusage>
      <eu pageid="2909" ns="13" title="Help talk:Contents" url="http://www.mediawiki.org/wiki/Extension:AnyWikiDraw" />
      <eu pageid="2948" ns="0" title="Wiki Issues" url="http://www.mediawiki.org/wiki/Extension:AnyWikiDraw" />
      <eu pageid="2948" ns="0" title="Wiki Issues" url="http://www.mediawiki.org/wiki/Extension:CentralNotice" />
      <eu pageid="2948" ns="0" title="Wiki Issues" url="http://www.mediawiki.org/wiki/Extension:Cite/Cite.php" />
      <eu pageid="5348" ns="1" title="Talk:Distributions" url="http://www.mediawiki.org/wiki/Extension:EasyTimeline" />
      <eu pageid="2909" ns="13" title="Help talk:Contents" url="http://www.mediawiki.org/wiki/Extension:GraphViz" />
      <eu pageid="2948" ns="0" title="Wiki Issues" url="http://www.mediawiki.org/wiki/Extension:GraphViz" />
      <eu pageid="2948" ns="0" title="Wiki Issues" url="http://www.mediawiki.org/wiki/Extension:ParserFunctions" />
      <eu pageid="2948" ns="0" title="Wiki Issues" url="http://www.mediawiki.org/wiki/Extension:Poem" />
      <eu pageid="7627" ns="3" title="User talk:Vanous" url="http://www.mediawiki.org/wiki/Extension:SpamBlacklist" />
    </exturlusage>
  </query>
  <query-continue>
    <exturlusage euoffset="10" />
  </query-continue>
</api>