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="BABEL_Kurt_10.10.1897-20.2.1968" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="39826" ns="0" title="BAADER František 1759-1.9.1835" />
      <p pageid="79646" ns="0" title="BAADER Matyáš 1732-4.2.1811" />
      <p pageid="39828" ns="0" title="BAAR-BAARENFELS Eduard von 6.11.1855-7.8.1935" />
      <p pageid="39829" ns="0" title="BAAR-BAARENFELS Eduard von ml. 1885-1967" />
      <p pageid="39832" ns="0" title="BAAROVÁ Hančí 13.1.1910-18.5.1947" />
      <p pageid="39833" ns="0" title="BAAROVÁ Lída 7.9.1914-27.10.2000" />
      <p pageid="39827" ns="0" title="BAAR Hugo 3.3.1873-18.6.1912" />
      <p pageid="39830" ns="0" title="BAAR Jindřich Šimon 7.2.1869-24.10.1925" />
      <p pageid="75458" ns="0" title="BAAR Josef 10.12.1850" />
      <p pageid="39831" ns="0" title="BAAR Josef 31.10.1835-15.12.1907" />
    </allpages>
  </query>
</api>