<munderover>

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨January 2023⁩.

The <munderover> MathML element is used to attach accents or limits both under and over an expression.

It uses the following syntax: <munderover> base underscript overscript </munderover>

Attributes

This element's attributes include the global MathML attributes as well as the following attributes:

accent: A <boolean> indicating whether the over script should be treated as an accent (i.e., drawn bigger and closer to the base expression).
accentunder: A <boolean> indicating whether the under script should be treated as an accent (i.e., drawn bigger and closer to the base expression).

Examples

html

<math display="block">
  <munderover>
    <mo>∑</mo>
    <mrow>
      <mi>n</mi>
      <mo>=</mo>
      <mn>1</mn>
    </mrow>
    <mrow>
      <mo>+</mo>
      <mn>∞</mn>
    </mrow>
  </munderover>
</math>