<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#point:after{
content:"\0203B";
}
</style>
</head>
<body>
<p>Reference Mark using Hexa Decimal: ※</p>
<p>Reference Mark using HTML Code: ※</p>
<p id="point">Reference Mark using CSS Entity: </p>
</body>
</html>