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>
    <alltransclusions gatcontinue="SimpleTable|57" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1" ns="0" title="Dr. Joey Paquet Home Page" />
      <page pageid="4" ns="0" title="Teaching" />
      <page pageid="5" ns="0" title="COMP345 - fall 2013" />
      <page pageid="7" ns="0" title="Publications" />
      <page pageid="8" ns="0" title="Curriculum" />
      <page pageid="9" ns="0" title="Personal Interests" />
      <page pageid="10" ns="0" title="Notable proverbs and sayings related to computer science" />
      <page pageid="51" ns="0" title="Writing" />
      <page pageid="53" ns="0" title="COMP248 - winter 2006" />
      <page pageid="56" ns="0" title="SOEN341 - fall 2006" />
    </pages>
  </query>
</api>