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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="20120415170633" timestamp="2012-04-15T17:06:33Z" ns="0" title="Cover sheet" />
        <page value="20120505161944" timestamp="2012-05-05T16:19:44Z" ns="0" title="General construction advice" />
        <page value="20120509202553" timestamp="2012-05-09T20:25:53Z" ns="0" title="Building modules" />
        <page value="20120529095154" timestamp="2012-05-29T09:51:54Z" ns="0" title="Products: Castle" />
        <page value="20120531163947" timestamp="2012-05-31T16:39:47Z" ns="0" title="Assembling the Large Castle" />
        <page value="20120531164056" timestamp="2012-05-31T16:40:56Z" ns="0" title="Assembling the Small Castle" />
        <page value="20120531164235" timestamp="2012-05-31T16:42:35Z" ns="0" title="Assembling the Church" />
        <page value="20120601053638" timestamp="2012-06-01T05:36:38Z" ns="0" title="Product: Castle" />
        <page value="20120601053830" timestamp="2012-06-01T05:38:30Z" ns="0" title="Product: Small Castle" />
        <page value="20120601053852" timestamp="2012-06-01T05:38:52Z" ns="0" title="Product: Church" />
      </results>
    </querypage>
  </query>
</api>