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HTML Code

<!DOCTYPE html>
<html>
<head>
  <style>#point::after{content:"\0318"}</style>
</head>
<body>
  <h1>Left Tack Below (U+0318) in HTML</h1>
  <p>Hex: o&#x0318; a&#x0318;</p>
  <p>Decimal: o&#792; e&#792;</p>
  <p id=point>CSS: o</p>
</body>
</html>

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HTML Entity for Left Tack Below (U+0318)