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>
    <allpages apcontinue="Bagpipe_generating_was_the_moment_a_build_that_created_instruments_in_many_distinctive_nearby_traditional_models" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="27506" ns="0" title="BBW Boutique" />
      <p pageid="10296" ns="0" title="Baby Cereal 1 Month" />
      <p pageid="8575" ns="0" title="Baby Cereal That Doesn T Cause Constipation" />
      <p pageid="2266" ns="0" title="Baby Footwear From The Makers Of Ugg Boots" />
      <p pageid="17292" ns="0" title="Back Up Cameras For Trucks" />
      <p pageid="28154" ns="0" title="Bad Credit Home Mortgage - Data 1 Acquiring a Home Loan" />
      <p pageid="17459" ns="0" title="Bad Fuel Pump Relay Symptoms" />
      <p pageid="17483" ns="0" title="Bad Ignition Coil Symptoms" />
      <p pageid="18154" ns="0" title="Bad Spark Plug Symptoms" />
      <p pageid="17044" ns="0" title="Bad Wheel Bearing Symptoms" />
    </allpages>
  </query>
</api>