Revision control

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<!DOCTYPE html>
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<html style="overflow: hidden; height: 500px; width: 500px; border: 5px solid pink">
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<script>
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if (window.testRunner)
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testRunner.setPrinting();
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</script>
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<body style="margin: 0; height: 50%; width: 50%; border: 5px solid salmon;"></body>