chromium/third_party/blink/web_tests/external/wpt/mathml/presentation-markup/operators/mo-form.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8"/>
    <title>&lt;mo&gt; form attribute</title>
    <link rel="help" href="https://w3c.github.io/mathml-core/#operator-fence-separator-or-accent-mo">
    <meta name="assert" content="Verifies behavior of form attribute.">
    <link rel="match" href="mo-form-ref.html">
  </head>
  <body>

    <!-- This checks the effect of @form on a prefix operator. -->
    _<math><mo form="infix">∇</mo></math>_
    _<math><mo form="prefix">∇</mo></math>_
    _<math><mo form="postfix">∇</mo></math>_

    <!-- This checks the effect of @form on an infix operator. -->
    _<math><mo form="infix">⋉</mo></math>_
    _<math><mo form="prefix">⋉</mo></math>_
    _<math><mo form="postfix">⋉</mo></math>_

    <!-- This checks the effect of @form on a postfix operator. -->
    _<math><mo form="infix">”</mo></math>_
    _<math><mo form="prefix">”</mo></math>_
    _<math><mo form="postfix">”</mo></math>_

    <script src="/mathml/support/feature-detection.js"></script>
    <script>MathMLFeatureDetection.ensure_for_match_reftest("has_operator_spacing");</script>
  </body>
</html>