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="Bescherming_binnentalud_en_kruin_met_folie/geotextiel_verzwaard_met_zandzakken" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="712" ns="0" title="B&amp;O&amp;R Testomgeving" />
      <p pageid="569" ns="0" title="Basisopleiding Dijkwacht WSRL" />
      <p pageid="934" ns="0" title="Beeldmateriaal H2video.nl (i.o.v. STOWA)" />
      <p pageid="226" ns="0" title="Bekramming" />
      <p pageid="202" ns="0" title="Beschadiging bekleding" />
      <p pageid="69" ns="0" title="Beschadiging bekleding binnentalud" />
      <p pageid="190" ns="0" title="Beschadiging grasbekleding" />
      <p pageid="89" ns="0" title="Beschadiging harde bekleding" />
      <p pageid="63" ns="0" title="Beschadigingen buitentalud" />
      <p pageid="1175" ns="0" title="Bescherming binnentalud en kruin met een bekramming" />
    </allpages>
  </query>
</api>