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>
    <alllinks galcontinue="Bescherming_binnentalud_en_kruin_met_een_bekramming" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="Belastingbeperkende maatregelen" missing="" />
      <page ns="0" title="Beschadiging grasbekleding buitentalud bij boezemkade" missing="" />
      <page ns="0" title="Beschadigingen" missing="" />
      <page pageid="569" ns="0" title="Basisopleiding Dijkwacht WSRL" />
      <page pageid="934" ns="0" title="Beeldmateriaal H2video.nl (i.o.v. STOWA)" />
      <page pageid="226" ns="0" title="Bekramming" />
      <page pageid="202" ns="0" title="Beschadiging bekleding" />
      <page pageid="190" ns="0" title="Beschadiging grasbekleding" />
      <page pageid="89" ns="0" title="Beschadiging harde bekleding" />
      <page pageid="63" ns="0" title="Beschadigingen buitentalud" />
    </pages>
  </query>
</api>