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="BYUIwiki/First_time" />
      <page ns="0" title="BYUIwiki/Aikido" missing="" />
      <page ns="0" title="BYUIwiki/Anime club" missing="" />
      <page ns="0" title="BYUIwiki/Biddulph" missing="" />
      <page ns="0" title="BYUIwiki/Create" missing="" />
      <page ns="0" title="BYUIwiki/Edit" missing="" />
      <page pageid="33848" ns="0" title="BC-ESP Curriculum Overview" />
      <page pageid="33863" ns="0" title="BCESP Curriculum Overview" />
      <page pageid="19602" ns="0" title="BGM Class of 62" />
      <page pageid="55940" ns="0" title="BWV196" />
      <page pageid="33869" ns="0" title="BYO Seismograph" />