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index2.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>iFrame Canvas</title>
<style>
html,body,.stage{ height: 100%; border:0; margin:0;}
</style>
<script>
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</script>
</head>
<body>
<div class="stage">
</div>
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</body>
</html>