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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>
    <querypage name="Ancientpages">
      <results>
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        <page value="20110223154754" timestamp="2011-02-23T15:47:54Z" ns="0" title="Flashfilesystem JFFS2" />
        <page value="20110531141931" timestamp="2011-05-31T14:19:31Z" ns="0" title="Accessing GPIO" />
        <page value="20110601150323" timestamp="2011-06-01T15:03:23Z" ns="0" title="Transparent UART Network" />
        <page value="20110601150333" timestamp="2011-06-01T15:03:33Z" ns="0" title="Transparent UART PacketTXMode" />
        <page value="20111122135626" timestamp="2011-11-22T13:56:26Z" ns="0" title="Transparent UART Software" />
        <page value="20130110133733" timestamp="2013-01-10T13:37:33Z" ns="0" title="Contacting an IPv6 Device" />
        <page value="20130418084641" timestamp="2013-04-18T08:46:41Z" ns="0" title="Module:Navbox" />
        <page value="20130507095017" timestamp="2013-05-07T09:50:17Z" ns="0" title="ADB2001" />
        <page value="20131203110037" timestamp="2013-12-03T11:00:37Z" ns="0" title="Acessing Serial Interface" />
      </results>
    </querypage>
  </query>
  <query-continue>
    <querypage qpoffset="10" />
  </query-continue>
</api>