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="CP-REL|115" />
  </query-continue>
  <query>
    <pages>
      <page pageid="112" ns="0" title="ÞAR SEM" />
      <page pageid="113" ns="0" title="ÞARS" />
      <page pageid="114" ns="0" title="ÞAR EÐ" />
      <page pageid="117" ns="0" title="HVORT SEM ER" />
      <page pageid="118" ns="0" title="HVAÐ SEM ER" />
      <page pageid="119" ns="0" title="ÁÐUR EN" />
      <page pageid="120" ns="0" title="LÍKT OG" />
      <page pageid="200" ns="0" title="Questions" />
      <page pageid="222" ns="0" title="LÍKA SEM" />
      <page pageid="280" ns="0" title="EXCLAMATIVES" />
    </pages>
  </query>
</api>