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="20131120070816" timestamp="2013-11-20T07:08:16Z" ns="0" title="Reload SMS Credits" />
        <page value="20131203005422" timestamp="2013-12-03T00:54:22Z" ns="0" title="SMS Rebranding and White Label" />
        <page value="20131210005800" timestamp="2013-12-10T00:58:00Z" ns="0" title="Compose SMS" />
        <page value="20131210095008" timestamp="2013-12-10T09:50:08Z" ns="0" title="How to Convert Microsoft Excel to CSV" />
        <page value="20131210095258" timestamp="2013-12-10T09:52:58Z" ns="0" title="How to Use CSV Compose" />
        <page value="20131211043037" timestamp="2013-12-11T04:30:37Z" ns="0" title="Bulk SMS Rate" />
        <page value="20131219010343" timestamp="2013-12-19T01:03:43Z" ns="0" title="Sending SMS" />
        <page value="20131219030400" timestamp="2013-12-19T03:04:00Z" ns="0" title="FAQ:SMS Replies / Receiving SMS" />
        <page value="20131219030420" timestamp="2013-12-19T03:04:20Z" ns="0" title="FAQ:Email to SMS" />
        <page value="20131219030436" timestamp="2013-12-19T03:04:36Z" ns="0" title="FAQ:Payments and Invoices" />
      </results>
    </querypage>
  </query>
</api>