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>
    <allpages>
      <p pageid="7449" ns="0" title="BBC Documentary" />
      <p pageid="10527" ns="0" title="BMBL" />
      <p pageid="4617" ns="0" title="BYU iGEM/Safety" />
      <p pageid="4880" ns="0" title="BYU iGEM/Team/Matt" />
      <p pageid="32220" ns="0" title="Band Detector Module" />
      <p pageid="8938" ns="0" title="Bielefeld 2011 Header" />
      <p pageid="18388" ns="0" title="Biological safety manual" />
      <p pageid="27338" ns="0" title="Bottom frame" />
      <p pageid="28292" ns="0" title="Brainstorming-(tagcloud).html" />
      <p pageid="8007" ns="0" title="Brainstorming Notes" />
    </allpages>
  </query>
  <query-continue>
    <allpages apfrom="Breadcrumb.php" />
  </query-continue>
</api>