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="Battery" />
      <page ns="0" title="Banquet" missing="" />
      <page pageid="2079" ns="0" title="BIOCOM" />
      <page pageid="2244" ns="0" title="BOC Gases" />
      <page pageid="3316" ns="0" title="Backpack" />
      <page pageid="3334" ns="0" title="Backpack Creation" />
      <page pageid="2869" ns="0" title="Backup" />
      <page pageid="3174" ns="0" title="Bacon Reek" />
      <page pageid="1948" ns="0" title="Bake Sale" />
      <page pageid="3575" ns="0" title="Baltz Algorithmic Generator of Spectra" />
      <page pageid="2071" ns="0" title="Bathroom" />