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<head>
<style>
#point:after{
content:"\0229E";
}
</style>
</head>
<body>
<p>Squared Plus using Hexa Decimal: ⊞</p>
<p>Squared Plus using HTML Code: ⊞</p>
<p>Squared Plus using HTML Entity: ⊞</p>
<p id="point">Squared Plus using CSS Entity: </p>
</body>
</html>