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"?>
    <allredirects garcontinue="Big_Mountain_Fudgecake" />
      <page pageid="1935" ns="0" title="B-Rabbit" />
      <page pageid="2087" ns="0" title="B.J. and the Affordables" />
      <page pageid="4634" ns="0" title="Balin Son of Dwalin" />
      <page pageid="2655" ns="0" title="Barbi and Jeff Gordon" />
      <page pageid="10438" ns="0" title="Barbie and the Sensations" />
      <page pageid="9934" ns="0" title="Barker and McGuffey" />
      <page pageid="623" ns="0" title="Barrett Rude Jr. and the Subtle Distinctions" />
      <page pageid="1994" ns="0" title="Barry Jive and the Uptown Five" />
      <page pageid="2034" ns="0" title="Bennie and the Jets" />
      <page pageid="4968" ns="0" title="Benson Dunwoody" />