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="6819" ns="0" title="BBQ Ribs" />
      <p pageid="7826" ns="0" title="Baby Dinosaur" />
      <p pageid="7827" ns="0" title="Baby Eater" />
      <p pageid="7828" ns="0" title="Baby Face Monster" />
      <p pageid="7829" ns="0" title="Baby Grinch" />
      <p pageid="4303" ns="0" title="Baby Grinch&#039;s Mischief Whistle" />
      <p pageid="7831" ns="0" title="Baby Hornet" />
      <p pageid="7832" ns="0" title="Baby Imp" />
      <p pageid="4468" ns="0" title="Baby Mothron" />
      <p pageid="7846" ns="0" title="Baby Ogre" />
    </allpages>
  </query>
  <query-continue>
    <allpages apfrom="Baby Penguin" />
  </query-continue>
</api>