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>
    <allredirects garcontinue="Classroom_talk:_LING2211,_NTNU_-_Ilocano_-_Understanding_Bloomfield_1942|2301" />
  </query-continue>
  <query>
    <pages>
      <page pageid="2300" ns="0" title="Benefactive" />
      <page pageid="1622" ns="0" title="Beneficial" />
      <page pageid="169" ns="0" title="Bug Reports and Design Suggestions" />
      <page pageid="2621" ns="0" title="Bangla constructions log page" />
      <page pageid="2555" ns="0" title="Bug Reports" />
      <page pageid="1792" ns="0" title="Brazilian Portuguese" />
      <page pageid="2280" ns="0" title="Case of personal pronouns" />
      <page pageid="2251" ns="0" title="Bulletin Board" />
      <page pageid="2302" ns="0" title="Classroom talk: LING2211, NTNU - Ilocano - Understanding Bloomfield 1942" />
      <page pageid="1767" ns="0" title="Regrouping SVC Mandarin Chinese" />
    </pages>
  </query>
</api>