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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="20090605161544" timestamp="2009-06-05T16:15:44Z" ns="0" title="Lord Lynx" />
        <page value="20090605175346" timestamp="2009-06-05T17:53:46Z" ns="0" title="Richard of Hallcaster" />
        <page value="20090624155633" timestamp="2009-06-24T15:56:33Z" ns="0" title="Tamrod" />
        <page value="20090630211512" timestamp="2009-06-30T21:15:12Z" ns="0" title="Earl Linen" />
        <page value="20090701154828" timestamp="2009-07-01T15:48:28Z" ns="0" title="The Pedlar of Fluffham" />
        <page value="20090701154900" timestamp="2009-07-01T15:49:00Z" ns="0" title="The Three Wishes" />
        <page value="20090701170600" timestamp="2009-07-01T17:06:00Z" ns="0" title="Whittingford and His Cat" />
        <page value="20090701173837" timestamp="2009-07-01T17:38:37Z" ns="0" title="BsEcoSim" />
        <page value="20090701180243" timestamp="2009-07-01T18:02:43Z" ns="0" title="Severanien" />
        <page value="20090711153227" timestamp="2009-07-11T15:32:27Z" ns="0" title="Four Nations Championship" />
      </results>
    </querypage>
  </query>
</api>