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#point:after{
content:"\000D6";
}
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<p>Uppercase O Umlaut using Hexa Decimal: Ö</p>
<p>Uppercase O Umlaut using HTML Code: Ö</p>
<p>Uppercase O Umlaut using HTML Entity: Ö</p>
<p id="point">Uppercase O Umlaut using CSS Entity: </p>
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