## ISO Standards Tag Set (ISOSTS) version 0.7: A customization of NISO JATS version 0.4

#### International Organization for Standardization (ISO)

# xref

# Cross-Reference (MathML 2.0 Tag Set)

Use documentation for the Mathematical Markup Language (MathML) 2.0 Tag Set. (http://www.w3.org/TR/MathML2/).

## Attribute Values

#### In Element

##### <mml:math>

Value | Meaning
--- | ---
An identifier (IDREF) | Points to another MathML element. Use MathML documentation.
Restriction: This attribute may be specified if the element is used.

## ISO Standards Tag Set (ISOSTS) version 0.7: A customization of NISO JATS version 0.4

#### Version of February 2012