You are looking at the HTML representation of the XML format.
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="20090316144247" timestamp="2009-03-16T14:42:47Z" ns="0" title="Presence Domain" />
        <page value="20090316182501" timestamp="2009-03-16T18:25:01Z" ns="0" title="Richard Knill" />
        <page value="20090317133032" timestamp="2009-03-17T13:30:32Z" ns="0" title="Set Passphrase" />
        <page value="20090317135658" timestamp="2009-03-17T13:56:58Z" ns="0" title="Domain Passphrase" />
        <page value="20090318121339" timestamp="2009-03-18T12:13:39Z" ns="0" title="Best Use" />
        <page value="20091111144057" timestamp="2009-11-11T14:40:57Z" ns="0" title="Advanced File Options" />
        <page value="20100105110202" timestamp="2010-01-05T11:02:02Z" ns="0" title="Processes" />
        <page value="20100105113252" timestamp="2010-01-05T11:32:52Z" ns="0" title="On Demand Client" />
        <page value="20100616164909" timestamp="2010-06-16T16:49:09Z" ns="0" title="Make Your Own Drink Wednesday" />
        <page value="20100622141954" timestamp="2010-06-22T14:19:54Z" ns="0" title="Iterative execution path" />
      </results>
    </querypage>
  </query>
</api>