%MATHML.xmlns.attrib;
MathML Namespace Declaration
Sets up the prefix and URI for the “namespacing” of the MathML elements.
Remarks
In this Tag Set, the attribute-name-like
construction “xmlns:%MATHML.prefix;” resolves to xmlns:mml,
which is not an attribute, but a namespace pseudo-attribute. The value provides a prefix to use for
the MathML elements. All namespace prefixes must be associated with a URL, and the prefix
“mml” has been set to the URL for the World Wide Web Consortium (W3C)
MathML 2.0 Tag Set or MathML 3.0 Tag Set.