MathML Underscript

MathML underscript is created with the <munder> tag. It attaches an accent or limit under an expression.

Syntax:

1. <munder> base underscript </munder>  

Example

To write the following expression:

Equivalent MathML code:

1. <math xmlns=’http://www.w3.org/1998/Math/MathML’ display=’block’ >  
2. <math>  
3. <munder accentunder=”true”>  
4.   <mrow>  
5.     <mi> x </mi>  
6.     <mo> + </mo>  
7.     <mi> y </mi>  
8.     <mo> + </mo>  
9.     <mi> z </mi>  
10.   </mrow>  
11.   <mo> ⏟ <!–BOTTOM CURLY BRACKET–> </mo>  
12. </munder>   
13. </math>  

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Attributes of Underscript Element

Index	Attribute	Description
1)	accentunder	If it is set true, the element is an accent, which is drawn closer to the base expression. If false (default value), the element is a limit under the base expression.
2)	align	It specifies the alignment of the underscript. Its possible values are: left, center, and right.
3)	class, id, style	These are used with stylesheets.
4)	href	It is used to set a hyperlink to a specified URI.
5)	mathbackground	It is used to specify background color. You can use #rgb, #rrggbb and html color names.
6)	mathcolor	It is used to set text color. You can use #rgb, #rrggbb and html color names.

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Supporting Browsers

Element	Chrome	IE	Firefox (Gecko)	Opera	Safari
<munder>	Not Supported	Not Supported	Supported	Not Supported	Only Basic Support