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>
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    <querypage name="Ancientpages">
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        <page value="20140412131108" timestamp="2014-04-12T13:11:08Z" ns="0" title="Configurer la redirection DNS (Windows Serveur DNS)" />
        <page value="20140413123305" timestamp="2014-04-13T12:33:05Z" ns="0" title="Déploiement d&#039;un routeur virtuel ipFire" />
        <page value="20140415095240" timestamp="2014-04-15T09:52:40Z" ns="0" title="Créer un serveur openVPN avec ipFire" />
        <page value="20140506141146" timestamp="2014-05-06T14:11:46Z" ns="0" title="ESXi attribuer un disque dur physique à une VM" />
        <page value="20140506152002" timestamp="2014-05-06T15:20:02Z" ns="0" title="Déploiement d&#039;un serveur Exchange 2010" />
        <page value="20150312194732" timestamp="2015-03-12T19:47:32Z" ns="0" title="Accueil" />
        <page value="20150316181928" timestamp="2015-03-16T18:19:28Z" ns="0" title="Exchange Hosted 2013 : Créer un nouveau compte" />
        <page value="20240705081006" timestamp="2024-07-05T08:10:06Z" ns="0" title="5 Things To Understand Before Taking A Trip To Turkey" />
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</api>