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="Bob_Altemeyer" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="2810" ns="0" title="B001 - Cannabis" />
      <p pageid="2548" ns="0" title="B001 - The Mendacity of Hype" />
      <p pageid="2829" ns="0" title="Behind the News" />
      <p pageid="2755" ns="0" title="Ben Manski" />
      <p pageid="3103" ns="0" title="Bernie Sanders" />
      <p pageid="2634" ns="0" title="Beyond The Promised Land - The Movement and The Myth" />
      <p pageid="1693" ns="0" title="Bill Hicks" />
      <p pageid="2830" ns="0" title="Black Op Radio" />
      <p pageid="6437" ns="0" title="Black Ops Radio" />
      <p pageid="205" ns="0" title="Blue Gold" />
    </allpages>
  </query>
</api>