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>
    <pageswithprop pwpcontinue="1840" />
  </query-continue>
  <query>
    <pageswithprop>
      <page pageid="1442" ns="0" title="Khorinis (Tal)" value="Tal Khorinis" />
      <page pageid="1662" ns="0" title="Khorinis (Insel)" value="Insel Khorinis" />
      <page pageid="1702" ns="0" title="Kampfkunst (G2-Schrift)" value="Kampfkunst (Schrift)" />
      <page pageid="1718" ns="0" title="Kampfkunst (G-Schrift)" value="Kampfkunst" />
      <page pageid="1723" ns="0" title="Almanach der Fokussteine (Schrift)" value="Almanach (Schrift)" />
      <page pageid="1775" ns="0" title="Almanach von Xardas (Schrift)" value="Almanach (Schrift)" />
      <page pageid="1786" ns="0" title="Alter Brief von Ivan (Schrift)" value="alter Brief (Schrift)" />
      <page pageid="1791" ns="0" title="Alter Brief von Archol (Schrift)" value="alter Brief (Schrift)" />
      <page pageid="1830" ns="0" title="Mortis (I.)" value="Mortis" />
      <page pageid="1837" ns="0" title="Grom (I.)" value="Grom" />
    </pageswithprop>
  </query>
</api>