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<body "lightyellow" contenteditable="true"="0">
<div>=</div>

<script>
function edit() {
  document.execCommand("selectAll");
  document.execCommand("InsertHTML",false,"<pre></pre>");
  document.execCommand("InsertHTML",false,"<div>i</div>");
  document.execCommand("indent");
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}
edit();
</script>
</body>
</html>
