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HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20080319155301" timestamp="2008-03-19T15:53:01Z" ns="0" title="TEX:Favorites" />
        <page value="20080425222015" timestamp="2008-04-25T22:20:15Z" ns="0" title="Deutscher Innovationspreis für nachhaltige Bildung" />
        <page value="20080425222244" timestamp="2008-04-25T22:22:44Z" ns="0" title="Wiki im Unterricht" />
        <page value="20080425222426" timestamp="2008-04-25T22:24:26Z" ns="0" title="Weitere Formatierungshilfen" />
        <page value="20080425230448" timestamp="2008-04-25T23:04:48Z" ns="0" title="7cd 2007 08" />
        <page value="20080425231108" timestamp="2008-04-25T23:11:08Z" ns="0" title="9d 2007 08" />
        <page value="20080425231201" timestamp="2008-04-25T23:12:01Z" ns="0" title="9e 2007 08" />
        <page value="20080429183424" timestamp="2008-04-29T18:34:24Z" ns="0" title="LK Mathematik 2006 08" />
        <page value="20080429184356" timestamp="2008-04-29T18:43:56Z" ns="0" title="Gk Kunst" />
        <page value="20080429184432" timestamp="2008-04-29T18:44:32Z" ns="0" title="Grundkurs Mathematik" />
      </results>
    </querypage>
  </query>
</api>