You are looking at the HTML representation of the mFormat?> format.
HTML is good for debugging, but probably is not suitable for your application.
Please see "format" parameter documentation at the API help for more information. 
<?xml version="1.0" encoding="utf-8"?>
<api>
  <query-continue>
    <allpages apfrom="BC - History of Lead" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="4974" ns="0" title="B1IQ6FSEQ Main" />
      <p pageid="4978" ns="0" title="B1IQ6P1 Main" />
      <p pageid="4981" ns="0" title="B1IQ6P1 drugabuse" />
      <p pageid="4987" ns="0" title="B1IQ6P1 sex" />
      <p pageid="7517" ns="0" title="B1IQ6P1 social" />
      <p pageid="7518" ns="0" title="B1IQ6P1 suicide" />
      <p pageid="4983" ns="0" title="B1IQ6P2 id" />
      <p pageid="4989" ns="0" title="B1IQ6P2 screening" />
      <p pageid="4982" ns="0" title="B1IQ6P3 camp3" />
      <p pageid="4682" ns="0" title="B2IQ13W8" />
    </allpages>
  </query>
</api>