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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="20060505153202" timestamp="2006-05-05T15:32:02Z" ns="0" title="Copyrights" />
        <page value="20060510174053" timestamp="2006-05-10T17:40:53Z" ns="0" title="Letter to the Editors of New Scientist Re: Solar Sailing Breaks Laws of Physics" />
        <page value="20070929182728" timestamp="2007-09-29T18:27:28Z" ns="0" title="Mathtest" />
        <page value="20071211182233" timestamp="2007-12-11T18:22:33Z" ns="0" title="Applications" />
        <page value="20071212151040" timestamp="2007-12-12T15:10:40Z" ns="0" title="Polar Communications" />
        <page value="20071212152456" timestamp="2007-12-12T15:24:56Z" ns="0" title="Exploration" />
        <page value="20071214195311" timestamp="2007-12-14T19:53:11Z" ns="0" title="Solar Sailing 201" />
        <page value="20080828183836" timestamp="2008-08-28T18:38:36Z" ns="0" title="Arthur C. Clarke" />
        <page value="20080828184035" timestamp="2008-08-28T18:40:35Z" ns="0" title="Alfred W. Differ" />
        <page value="20080828184137" timestamp="2008-08-28T18:41:37Z" ns="0" title="Anthony Ewing" />
      </results>
    </querypage>
  </query>
</api>