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>
    <allfileusages gafcontinue="Flagcanadamini.gif|3234" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1298" ns="0" title="Christians" />
      <page pageid="1443" ns="0" title="Carolyn Arends" />
      <page pageid="1453" ns="0" title="CHIC" />
      <page pageid="1476" ns="0" title="CJTW" />
      <page pageid="1650" ns="0" title="Roxanne Flagler" />
      <page pageid="1768" ns="0" title="ChristianRadioCanada News" />
      <page pageid="2362" ns="0" title="Lesley Morgan" />
      <page pageid="2489" ns="0" title="Paul Wilkinson" />
      <page pageid="2542" ns="0" title="Anita Paul" />
      <page pageid="4183" ns="0" title="David Graves" />
    </pages>
  </query>
</api>