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>
    <allpages apcontinue="Brush" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="1738" ns="0" title="Banana Pancakes" />
      <p pageid="1735" ns="0" title="Bar" />
      <p pageid="1376" ns="0" title="Beautiful Thoughts" />
      <p pageid="1745" ns="0" title="Boaz" />
      <p pageid="1449" ns="0" title="Bones" />
      <p pageid="1494" ns="0" title="Boogie Chillin" />
      <p pageid="1493" ns="0" title="Boom Boom" />
      <p pageid="1719" ns="0" title="Brian Chan: Open Source as Missions - Biola Digital Ministry Conference 2012" />
      <p pageid="1433" ns="0" title="Brothers and sisters" />
      <p pageid="1568" ns="0" title="Brown Eyed Girl" />
    </allpages>
  </query>
</api>