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="Books" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="Beetle Gazette" missing="" />
      <page ns="0" title="Board of Directors" missing="" />
      <page pageid="869" ns="0" title="BE-NE-LUX Genealogist" />
      <page pageid="742" ns="0" title="BE-NE-LUX Genealogy Study Group" />
      <page pageid="823" ns="0" title="Back Issue Digitizing Study Group" />
      <page pageid="654" ns="0" title="Back Issue Sales" />
      <page pageid="228" ns="0" title="Balling Award" />
      <page pageid="844" ns="0" title="Ballot" />
      <page pageid="23" ns="0" title="Board" />
      <page pageid="78" ns="0" title="Board Policies" />
    </pages>
  </query>
</api>