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="DeltaTower_-_32Bit_Umbau" />
  </query-continue>
  <query>
    <allpages>
      <p pageid="61" ns="0" title="Berlan 350" />
      <p pageid="37" ns="0" title="Bernina" />
      <p pageid="44" ns="0" title="Bernina 530-1 Record" />
      <p pageid="45" ns="0" title="Bernina 532-1" />
      <p pageid="54" ns="0" title="Bosch Kreuzlinienlaser PLL 360" />
      <p pageid="55" ns="0" title="Bosch Laser-Entfernungsmesser PLR 15" />
      <p pageid="77" ns="0" title="Bosch Laser-Wasserwaage PLL 1P" />
      <p pageid="73" ns="0" title="Bresser BioLux NV" />
      <p pageid="117" ns="0" title="CNC Plasmacutter" />
      <p pageid="10" ns="0" title="CarontePass" />
    </allpages>
  </query>
</api>