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="BREAK_CAR_DOOR" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="2504" ns="0" title="B" />
      <p pageid="797" ns="0" title="BEGIN CAM COMMANDS" />
      <p pageid="798" ns="0" title="BEGIN CHAR SEARCH CRITERIA" />
      <p pageid="799" ns="0" title="BEGIN PED QUEUE MEMBERSHIP LIST" />
      <p pageid="800" ns="0" title="BLEND FROM NM WITH ANIM" />
      <p pageid="801" ns="0" title="BLEND OUT CHAR MOVE ANIMS" />
      <p pageid="802" ns="0" title="BLOCK CHAR AMBIENT ANIMS" />
      <p pageid="803" ns="0" title="BLOCK CHAR GESTURE ANIMS" />
      <p pageid="804" ns="0" title="BLOCK CHAR HEAD IK" />
      <p pageid="805" ns="0" title="BLOCK CHAR VISEME ANIMS" />
    </allpages>
  </query>
</api>