You are looking at the HTML representation of the XML format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query-continue>
    <allimages gaifrom="DHH So Be Happy.jpg" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1546" ns="6" title="File:A Short Introduction To Font Characteristics.pdf" />
      <page pageid="1494" ns="6" title="File:Afferent Coupling.gif" />
      <page pageid="1486" ns="6" title="File:Andrew Glover.jpg" />
      <page pageid="1510" ns="6" title="File:Aquarius.jpg" />
      <page pageid="1506" ns="6" title="File:Aries.jpg" />
      <page pageid="1517" ns="6" title="File:AspectJ MockObjects Code Sample.zip" />
      <page pageid="1549" ns="6" title="File:Build Min Time.gif" />
      <page pageid="1561" ns="6" title="File:Cacti load average.png" />
      <page pageid="1491" ns="6" title="File:Cobertura Reports.jpg" />
      <page pageid="1521" ns="6" title="File:Components Of The Word Finder GUI.png" />
    </pages>
  </query>
</api>