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"?>
    <alllinks galcontinue="Basilejská_kompaktáta" />
      <page ns="0" title="B.I.B.S." missing="" />
      <page ns="0" title="B:a" missing="" />
      <page ns="0" title="BK IMOS Brno" missing="" />
      <page ns="0" title="Baloon Jam" missing="" />
      <page ns="0" title="Baltské moře" missing="" />
      <page ns="0" title="Barbara Krafft-Steiner" missing="" />
      <page ns="0" title="Barbora Celjská" missing="" />
      <page ns="0" title="Barokní gotika" missing="" />
      <page ns="0" title="Baroko" missing="" />
      <page pageid="326" ns="0" title="Banín" />