Alternate Text (MathML 2.0 DTD)


See documentation for the Mathematical Markup Language (MathML) 2.0 DTD.


The alttext attribute is used only within the mathematical expressions of MathML. The equivalent function, providing words that can be display “behind” a graphic or be pronounced over a graphic, is performed by the <alt-text> element for graphics (and other elements) within this DTD.

Attribute Values

In Element

<mml:math> Math (MathML 2.0 DTD)
Value Meaning
Text, numbers, or special characters See MathML documentation.
Restriction: This attribute may be specified if the element is used.