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>
    <alllinks galcontinue="CSS_Selector" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="Bar Scripts" missing="" />
      <page pageid="1568" ns="0" title="Baking Light" />
      <page pageid="1792" ns="0" title="Bot Global" />
      <page pageid="2034" ns="0" title="Bot Global Remarks" />
      <page pageid="2167" ns="0" title="CSSMatcher" />
      <page pageid="2214" ns="0" title="CSSMatcher Remarks" />
      <page pageid="2168" ns="0" title="CSSPseudoMatcher" />
      <page pageid="2215" ns="0" title="CSSPseudoMatcher Remarks" />
      <page pageid="2169" ns="0" title="CSSSelector" />
      <page pageid="2216" ns="0" title="CSSSelector Remarks" />
    </pages>
  </query>
</api>