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>Μέσο</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>Ειδικό</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>Συζήτηση</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>Χρήστης</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>Συζήτηση χρήστη</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>Κόμμα Πειρατών Ελλάδας wiki</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>Συζήτηση Κόμμα Πειρατών Ελλάδας wiki</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>Αρχείο</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>Συζήτηση αρχείου</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>Συζήτηση 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>Πρότυπο</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>Συζήτηση προτύπου</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>Βοήθεια</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>Συζήτηση βοήθειας</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>Κατηγορία</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>Συζήτηση κατηγορίας</string>
                  </var>
                  <var name="subpages">
                    <string />
                  </var>
                  <var name="canonical">
                    <string>Category talk</string>
                  </var>
                </struct>
              </var>
            </struct>
          </var>
        </struct>
      </var>
    </struct>
 </data>
</wddxPacket>