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>
    <allpages apcontinue="Salzburg_University_of_Applied_Sciences" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="29" ns="0" title="Blog" />
      <p pageid="19" ns="0" title="Crete" />
      <p pageid="11" ns="0" title="Emilia-Romagna" />
      <p pageid="14" ns="0" title="Friuli-Venezia Giulia" />
      <p pageid="21" ns="0" title="Heraklion Development Agency" />
      <p pageid="24" ns="0" title="Institute for the Study of the Societies and Knowledge" />
      <p pageid="5" ns="0" title="List of Case Studies" />
      <p pageid="1" ns="0" title="Main Page" />
      <p pageid="37" ns="0" title="Municipality of Vratsa" />
      <p pageid="33" ns="0" title="Regional Economic Development Agency for Šumadija and Pomoravlje" />
    </allpages>
  </query>
</api>