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="Babs_and_Jim_Zola|7894" />
  </query-continue>
  <query>
    <pages>
      <page pageid="1" ns="0" title="Main Page" />
      <page pageid="183" ns="0" title="The Svensons" />
      <page pageid="197" ns="0" title="Valdis Yanovskis" />
      <page pageid="208" ns="0" title="Andrey Mantchev" />
      <page pageid="209" ns="0" title="Big Apple Circus" />
      <page pageid="909" ns="0" title="Hans-Ludwig Suppmeier" />
      <page pageid="1687" ns="0" title="Babaeva and Kostylev Video (c2005)" />
      <page pageid="1688" ns="0" title="Babaeva and Kostylev" />
      <page pageid="1689" ns="0" title="Dmitry Kostylev" />
      <page pageid="2083" ns="0" title="Babaeva &amp; Kostylev" />
    </pages>
  </query>
</api>