block">
      <mstyle displaystyle="false">
        <munderover>
          <mo>∑</mo>
          <mi>b</mi>
          <mi>c</mi>
        </munderover>
      </mstyle>
    </math>

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