op-dict-1-notref.html

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<!DOCTYPE html>

<html>

<head>

  <title>op-dict mo form</title>

</head>

<body>

  <math>

    <mrow>

      <mo form="prefix">+</mo>

      <!-- need a second child to avoid zeroing dictionary spacing -->

      <mn>1</mn>

    </mrow>

  </math>

</body>

</html>