modèle -- de portable (facultatif)

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<div class="vtel"><div class="vpseudo">Pseudo</div><div class="vbg"><div class="vm1"><div class="vf1"></div>message envoyé ici. message envoyé ici. message envoyé ici.</div>
<div class="vm2"><div class="vf2"></div>message reçu là. message reçu là. message reçu là.</div>
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