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="BBC" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="B-2 Bomber" missing="" />
      <page ns="0" title="B.C. VITA Tbilisi" missing="" />
      <page ns="0" title="B.C. Zenit Saint Petersburg" missing="" />
      <page ns="0" title="B. R. Myers" missing="" />
      <page ns="0" title="B61 nuclear bomb" missing="" />
      <page ns="0" title="BAC One-Eleven" missing="" />
      <page ns="0" title="BAE Systems" missing="" />
      <page ns="0" title="BAFTA" missing="" />
      <page ns="0" title="BATE" missing="" />
      <page ns="0" title="BB&amp;T Classic" missing="" />
    </pages>
  </query>
</api>