How to use the MathML Underscript Element: "munder"?

"munder" is the MathML Underscript Element that allows you to specify a base sub-element associated with an underscript sub-element.

The syntax for "munder" element is:

<munder> base underscript </munder>

"munder" element supports 2 useful attributes:

• "accentunder" - Specifies whether the underscript is drawn as an "accent" or as a limit. An accent is drawn in the same size as the base and closer to the base.
• "align" - Specifies whether the underscript is aligned left, center, or right. The default is "center".

Here is an example of using the "munder" element with accentunder="true".

<math><munder accentunder="true">
  <mrow><mi>x</mi><mo>+</mo><mi>y</mi><mo>+</mo><mi>z</mi></mrow>
  <mo>&#x23DF;</mo></munder></math>
    $\underbrace{x+y+z}$

Here is the same example with accentunder="false".

<math><munder accentunder="false">
  <mrow><mi>x</mi><mo>+</mo><mi>y</mi><mo>+</mo><mi>z</mi></mrow>
  <mo>&#x23DF;</mo></munder></math>
    $\underbrace{x+y+z}$

⇒ "mover" - MathML Overscript Element

⇐ "msubsup" - MathML Subscript-Superscript Element

⇑ Complex MathML Elements

⇑⇑ MathML (Mathematical Markup Language)