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>
    <allredirects garcontinue="Fab_Lab_Reykjavík" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="E cigarettes" missing="" />
      <page ns="0" title="E cigs" missing="" />
      <page ns="0" title="Effective cellulite creams" missing="" />
      <page ns="0" title="Electronic Cigarette" missing="" />
      <page ns="0" title="Electronic cigarettes review" missing="" />
      <page pageid="161" ns="0" title="DIY notebook making" />
      <page pageid="27" ns="0" title="Electronics workspace/Components" />
      <page pageid="28" ns="0" title="Electronics workspace/Tools" />
      <page pageid="5495" ns="0" title="FAB Tal(K) Reykjavik" />
      <page pageid="61" ns="0" title="Fab Lab/Íslenska" />
    </pages>
  </query>
</api>