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="20061213234718" timestamp="2006-12-13T23:47:18Z" ns="0" title="Send SMS" />
        <page value="20070301015051" timestamp="2007-03-01T01:50:51Z" ns="0" title="SMS compression options" />
        <page value="20070309091707" timestamp="2007-03-09T09:17:07Z" ns="0" title="CSharp Overview" />
        <page value="20070511223501" timestamp="2007-05-11T22:35:01Z" ns="0" title="PHP Sending SMS via SMTP" />
        <page value="20070511224454" timestamp="2007-05-11T22:44:54Z" ns="0" title="Java Sending SMS via SMTP" />
        <page value="20070511225301" timestamp="2007-05-11T22:53:01Z" ns="0" title="CSharp Sending SMS via SMTP" />
        <page value="20070815180512" timestamp="2007-08-15T18:05:12Z" ns="0" title="Examples And Concepts" />
        <page value="20080219235123" timestamp="2008-02-19T23:51:23Z" ns="0" title="Send SMS from your C" />
        <page value="20080219235608" timestamp="2008-02-19T23:56:08Z" ns="0" title="Send SMS from PHP" />
        <page value="20080220000002" timestamp="2008-02-20T00:00:02Z" ns="0" title="Send SMS from Java" />
      </results>
    </querypage>
  </query>
</api>