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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="20130325181055" timestamp="2013-03-25T18:10:55Z" ns="0" title="Disable Magento Modules" />
        <page value="20130325183408" timestamp="2013-03-25T18:34:08Z" ns="0" title="Turn on Manual Indexing" />
        <page value="20130325200229" timestamp="2013-03-25T20:02:29Z" ns="0" title="How to Reset Magento Password" />
        <page value="20130325204554" timestamp="2013-03-25T20:45:54Z" ns="0" title="Monitor Tool" />
        <page value="20130326025950" timestamp="2013-03-26T02:59:50Z" ns="0" title="Setup Multi Instance Memcache" />
        <page value="20130326031015" timestamp="2013-03-26T03:10:15Z" ns="0" title="Check if Memcached is Running" />
        <page value="20130326031529" timestamp="2013-03-26T03:15:29Z" ns="0" title="Memcached Monitor Tool" />
        <page value="20130625001349" timestamp="2013-06-25T00:13:49Z" ns="0" title="What is Magento?" />
        <page value="20130625002055" timestamp="2013-06-25T00:20:55Z" ns="0" title="Magento Internal Cron not Running" />
        <page value="20130625002357" timestamp="2013-06-25T00:23:57Z" ns="0" title="Magento will NOT save my Product Updates" />
      </results>
    </querypage>
  </query>
</api>