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<style>
#point:after{
content:"\0022C";
}
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<body>
<p>Uppercase O Tilde and Macron using Hexa Decimal: Ȭ</p>
<p>Uppercase O Tilde and Macron using HTML Code: Ȭ</p>
<p id="point">Uppercase O Tilde and Macron using CSS Entity: </p>
</body>
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