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="Class_of_1964_50th_Reunion" />
  </query-continue>
  <query>
    <pages>
      <page pageid="87" ns="0" title="Bobby Brooks" />
      <page pageid="262" ns="0" title="Building plans; blueprints" />
      <page pageid="297" ns="0" title="Building plans; blueprints of the renovation" />
      <page pageid="21" ns="0" title="Christ Christoff" />
      <page pageid="256" ns="0" title="Claire Malis Callaway" />
      <page pageid="22" ns="0" title="Class of 1932" />
      <page pageid="24" ns="0" title="Class of 1932 Reunion" />
      <page pageid="41" ns="0" title="Class of 1932 and the Lew Wallace Study, Crawfordsville, IN" />
      <page pageid="222" ns="0" title="Class of 1933 50th Reunion" />
      <page pageid="205" ns="0" title="Class of 1933 Handbook" />
    </pages>
  </query>
</api>