index.md

---

title: <munderover>
slug: Web/MathML/Element/munderover
browser-compat: mathml.elements.munderover

---

{{MathMLRef}}

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

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

{{ EmbedLiveSample('munderover_example', 700, 200, "", "") }}

Specifications

{{Specifications}}

Browser compatibility

{{Compat}}

See also

• {{ MathMLElement("munder") }} (Underscript)

• {{ MathMLElement("mover") }} (Overscript)