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"?>
    <allpages apcontinue="Black_Ice_Area" />
      <p pageid="1318" ns="0" title="BEE Buttress" />
      <p pageid="868" ns="0" title="Bad Kloof" />
      <p pageid="874" ns="0" title="Bains Kloof" />
      <p pageid="1029" ns="0" title="Barrier Buttress" />
      <p pageid="1377" ns="0" title="Bat Wall" />
      <p pageid="1320" ns="0" title="Berghoff Farm" />
      <p pageid="1133" ns="0" title="Berlin Wall" />
      <p pageid="612" ns="0" title="Betty&#039;s Boulder" />
      <p pageid="777" ns="0" title="Big Groove Sector" />
      <p pageid="1110" ns="0" title="Biscuit Wall" />