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>
    <alllinks galcontinue="Backderf,_Derf:_Sopigt|5461" />
  </query-continue>
  <query>
    <pages>
      <page pageid="146" ns="0" title="Michel Foucault" />
      <page pageid="531" ns="0" title="Axel Holmström" />
      <page pageid="904" ns="0" title="Traven, B.: Bomullsplockarna" />
      <page pageid="2311" ns="0" title="Ret Marut" />
      <page pageid="2660" ns="0" title="Traven, B.: Macario" />
      <page pageid="2775" ns="0" title="The Free Voice of Labour - The Jewish Anarchists" />
      <page pageid="3913" ns="0" title="Gustaf Rune Eriks" />
      <page pageid="4372" ns="0" title="Der Ziegelbrenner" />
      <page pageid="4599" ns="0" title="Traven, B: Dödsskeppet" />
    </pages>
  </query>
</api>