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="20070315195543" timestamp="2007-03-15T19:55:43Z" ns="0" title="Bugatti Type 72" />
        <page value="20070503195645" timestamp="2007-05-03T19:56:45Z" ns="0" title="Nubian Lion" />
        <page value="20070503200417" timestamp="2007-05-03T20:04:17Z" ns="0" title="Stretching Leopard" />
        <page value="20070503200519" timestamp="2007-05-03T20:05:19Z" ns="0" title="Walking Panther" />
        <page value="20070531104457" timestamp="2007-05-31T10:44:57Z" ns="0" title="Rabag Bugatti" />
        <page value="20070531111947" timestamp="2007-05-31T11:19:47Z" ns="0" title="Rabag Bugatti Rocket Car" />
        <page value="20070617092850" timestamp="2007-06-17T09:28:50Z" ns="0" title="Bugatti Type 35" />
        <page value="20070617093433" timestamp="2007-06-17T09:34:33Z" ns="0" title="Bugatti Type 36" />
        <page value="20070617093549" timestamp="2007-06-17T09:35:49Z" ns="0" title="Bugatti Type 30" />
        <page value="20070617093633" timestamp="2007-06-17T09:36:33Z" ns="0" title="Bugatti Type 29" />
      </results>
    </querypage>
  </query>
</api>