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>
    <alltransclusions gatcontinue="Created|820" />
  </query-continue>
  <query>
    <pages>
      <page pageid="745" ns="0" title="Tales from Deep Space" />
      <page pageid="765" ns="0" title="DBES Einstein 15" />
      <page pageid="767" ns="0" title="SVF-123 Moon Shots" />
      <page pageid="777" ns="0" title="UNSM" />
      <page pageid="779" ns="0" title="VMFA-235 Death Angels" />
      <page pageid="780" ns="0" title="SVFA-55 Archers" />
      <page pageid="812" ns="0" title="VF-1 and Varients" />
      <page pageid="813" ns="0" title="The Apeman007&#039;s FAQ" />
      <page pageid="815" ns="0" title="The Apeman007&#039;s Games&#039; Starship Log" />
      <page pageid="816" ns="0" title="The Apeman007&#039;s Games&#039; Locations Guide" />
    </pages>
  </query>
</api>