<munderover> - MathML

Baseline 2023

Newly available

Since January 2023, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

The MathML element is used to attach accents or limits both under and over an expression. It uses the following syntax: base underscript overscript

Attributes

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

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

html

 $\sum_{n = 1}^{+ ∞}$

Implicit ARIA role	None

Specification
MathML Core # underscripts-and-overscripts-munder-mover-munderover