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<!DOCTYPE html>
<html class="reftest-wait">
  <head>
    <meta charset="utf-8">
    <title>&lt;mo&gt; dynamic lspace rspace</title>
    <link rel="help" href="https://w3c.github.io/mathml-core/#operator-fence-separator-or-accent-mo">
    <meta name="assert" content="Verifies dynamic setting of lspace and rspace">
    <link rel="match" href="mo-lspace-rspace-dynamic-ref.html">
    <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
    <style>
      math, math * {
          font: 60px/1 Ahem;
      }
      mo {
          color: blue;
      }
    </style>
    <script>
      window.addEventListener("load", () => {
          document.getElementById("mo_attach_lspace").setAttribute("lspace", "2em");
          document.getElementById("mo_attach_rspace").setAttribute("rspace", "3em");
          document.getElementById("mo_modify_lspace").setAttribute("lspace", "4em");
          document.getElementById("mo_modify_rspace").setAttribute("rspace", "5em");
          document.getElementById("mo_remove_lspace").removeAttribute("lspace");
          document.getElementById("mo_remove_rspace").removeAttribute("rspace");
          document.documentElement.classList.remove("reftest-wait");
      });
    </script>
  </head>
  <body>
    <p>
      <math>
        <mn>1</mn><mo id="mo_attach_lspace">X</mo><mn>2</mn>
      </math>
    </p>
    <p>
      <math>
        <mn>1</mn><mo id="mo_attach_rspace">X</mo><mn>2</mn>
      </math>
    </p>
    <p>
      <math>
        <mn>1</mn><mo id="mo_modify_lspace" lspace="1em" rspace="1em">X</mo><mn>2</mn>
      </math>
    </p>
    <p>
      <math>
        <mn>1</mn><mo id="mo_modify_rspace" lspace="1em" rspace="1em">X</mo><mn>2</mn>
      </math>
    </p>
    <p>
      <math>
        <mn>1</mn><mo id="mo_remove_lspace" lspace="1em" rspace="1em">X</mo><mn>2</mn>
      </math>
    </p>
    <p>
      <math>
        <mn>1</mn><mo id="mo_remove_rspace" lspace="1em" rspace="1em">X</mo><mn>2</mn>
      </math>
    </p>
    <script src="/mathml/support/feature-detection.js"></script>
    <script>MathMLFeatureDetection.ensure_for_match_reftest("has_operator_spacing");</script>
  </body>
</html>