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="20130420132413" timestamp="2013-04-20T13:24:13Z" ns="0" title="Colocation" />
        <page value="20130421172448" timestamp="2013-04-21T17:24:48Z" ns="0" title="Rent Only" />
        <page value="20130422151249" timestamp="2013-04-22T15:12:49Z" ns="0" title="Centos6" />
        <page value="20130426020049" timestamp="2013-04-26T02:00:49Z" ns="0" title="Ubuntu" />
        <page value="20130426020526" timestamp="2013-04-26T02:05:26Z" ns="0" title="Debian" />
        <page value="20130426022246" timestamp="2013-04-26T02:22:46Z" ns="0" title="What is Unamanaged Support" />
        <page value="20130426023412" timestamp="2013-04-26T02:34:12Z" ns="0" title="Other Help" />
        <page value="20130501043412" timestamp="2013-05-01T04:34:12Z" ns="0" title="Dacentec Services" />
        <page value="20130501043602" timestamp="2013-05-01T04:36:02Z" ns="0" title="Supermicro No-Bay" />
        <page value="20130501044202" timestamp="2013-05-01T04:42:02Z" ns="0" title="HE Proliant SE1101" />
      </results>
    </querypage>
  </query>
</api>