You are looking at the HTML representation of the WDDX 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 WDDX format, set format=wddx.
See the complete documentation, or API help for more information.
<?xml version="1.0"?>
<wddxPacket version="1.0">
 <header/>
 <data>
    <struct>
      <var name="query">
        <struct>
          <var name="namespaces">
            <struct>
              <var name="-2">
                <struct>
                  <var name="id">
                    <number>-2</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>Media</string>
                  </var>
                  <var name="canonical">
                    <string>Media</string>
                  </var>
                </struct>
              </var>
              <var name="-1">
                <struct>
                  <var name="id">
                    <number>-1</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>Speciaal</string>
                  </var>
                  <var name="canonical">
                    <string>Special</string>
                  </var>
                </struct>
              </var>
              <var name="0">
                <struct>
                  <var name="id">
                    <number>0</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string />
                  </var>
                  <var name="content">
                    <string />
                  </var>
                </struct>
              </var>
              <var name="1">
                <struct>
                  <var name="id">
                    <number>1</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>Overleg</string>
                  </var>
                  <var name="subpages">
                    <string />
                  </var>
                  <var name="canonical">
                    <string>Talk</string>
                  </var>
                </struct>
              </var>
              <var name="2">
                <struct>
                  <var name="id">
                    <number>2</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>Gebruiker</string>
                  </var>
                  <var name="subpages">
                    <string />
                  </var>
                  <var name="canonical">
                    <string>User</string>
                  </var>
                </struct>
              </var>
              <var name="3">
                <struct>
                  <var name="id">
                    <number>3</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>Overleg gebruiker</string>
                  </var>
                  <var name="subpages">
                    <string />
                  </var>
                  <var name="canonical">
                    <string>User talk</string>
                  </var>
                </struct>
              </var>
              <var name="4">
                <struct>
                  <var name="id">
                    <number>4</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>MovieMeterWiki</string>
                  </var>
                  <var name="subpages">
                    <string />
                  </var>
                  <var name="canonical">
                    <string>Project</string>
                  </var>
                </struct>
              </var>
              <var name="5">
                <struct>
                  <var name="id">
                    <number>5</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>Overleg MovieMeterWiki</string>
                  </var>
                  <var name="subpages">
                    <string />
                  </var>
                  <var name="canonical">
                    <string>Project talk</string>
                  </var>
                </struct>
              </var>
              <var name="6">
                <struct>
                  <var name="id">
                    <number>6</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>Bestand</string>
                  </var>
                  <var name="canonical">
                    <string>File</string>
                  </var>
                </struct>
              </var>
              <var name="7">
                <struct>
                  <var name="id">
                    <number>7</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>Overleg bestand</string>
                  </var>
                  <var name="subpages">
                    <string />
                  </var>
                  <var name="canonical">
                    <string>File talk</string>
                  </var>
                </struct>
              </var>
              <var name="8">
                <struct>
                  <var name="id">
                    <number>8</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>MediaWiki</string>
                  </var>
                  <var name="subpages">
                    <string />
                  </var>
                  <var name="canonical">
                    <string>MediaWiki</string>
                  </var>
                </struct>
              </var>
              <var name="9">
                <struct>
                  <var name="id">
                    <number>9</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>Overleg MediaWiki</string>
                  </var>
                  <var name="subpages">
                    <string />
                  </var>
                  <var name="canonical">
                    <string>MediaWiki talk</string>
                  </var>
                </struct>
              </var>
              <var name="10">
                <struct>
                  <var name="id">
                    <number>10</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>Sjabloon</string>
                  </var>
                  <var name="canonical">
                    <string>Template</string>
                  </var>
                </struct>
              </var>
              <var name="11">
                <struct>
                  <var name="id">
                    <number>11</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>Overleg sjabloon</string>
                  </var>
                  <var name="subpages">
                    <string />
                  </var>
                  <var name="canonical">
                    <string>Template talk</string>
                  </var>
                </struct>
              </var>
              <var name="12">
                <struct>
                  <var name="id">
                    <number>12</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>Help</string>
                  </var>
                  <var name="subpages">
                    <string />
                  </var>
                  <var name="canonical">
                    <string>Help</string>
                  </var>
                </struct>
              </var>
              <var name="13">
                <struct>
                  <var name="id">
                    <number>13</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>Overleg help</string>
                  </var>
                  <var name="subpages">
                    <string />
                  </var>
                  <var name="canonical">
                    <string>Help talk</string>
                  </var>
                </struct>
              </var>
              <var name="14">
                <struct>
                  <var name="id">
                    <number>14</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>Categorie</string>
                  </var>
                  <var name="canonical">
                    <string>Category</string>
                  </var>
                </struct>
              </var>
              <var name="15">
                <struct>
                  <var name="id">
                    <number>15</number>
                  </var>
                  <var name="case">
                    <string>first-letter</string>
                  </var>
                  <var name="*">
                    <string>Overleg categorie</string>
                  </var>
                  <var name="subpages">
                    <string />
                  </var>
                  <var name="canonical">
                    <string>Category talk</string>
                  </var>
                </struct>
              </var>
            </struct>
          </var>
        </struct>
      </var>
    </struct>
 </data>
</wddxPacket>