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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.
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<?xml version="1.0"?>
<api>
<query-continue>
<allcategories accontinue="Mapy_MM1" />
</query-continue>
<query>
<allcategories>
<c size="2" pages="2" files="0" subcats="0" xml:space="preserve">DOSBox</c>
<c size="8" pages="0" files="0" subcats="8" xml:space="preserve">Deníky</c>
<c size="3" pages="3" files="0" subcats="0" xml:space="preserve">Deníky MM1</c>
<c size="1" pages="1" files="0" subcats="0" xml:space="preserve">Deníky MM2</c>
<c size="1" pages="1" files="0" subcats="0" xml:space="preserve">Deníky MM4+5</c>
<c size="2" pages="2" files="0" subcats="0" xml:space="preserve">Deníky MM6</c>
<c size="2" pages="2" files="0" subcats="0" xml:space="preserve">Diskuse</c>
<c size="2" pages="2" files="0" subcats="0" xml:space="preserve">Herní šablony</c>
<c size="5" pages="5" files="0" subcats="0" xml:space="preserve">Historie MM</c>
<c size="2" pages="0" files="0" subcats="2" xml:space="preserve">Mapy</c>
</allcategories>
</query>
</api>