## ISO Standards Tag Set (ISOSTS) version 0.5: A customization of NISO JATS version 0.4

#### International Organization for Standardization (ISO)

# rid

# Reference to an Identifier

Holds the value of the identifier of an associated element; used for linking related elements (for example, <term> to a <def>, <bio> to a <contrib>).

## Attribute Values

#### In Elements

##### <milestone-end>

##### <milestone-start>

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

#### In Elements

<aff>, <award-id>, <bio>, <contrib>, <def>, <funding-source>, <sig>, <sig-block>, <term>, <xref>

Value | Meaning
--- | ---
One or more identifiers (IDREFS) | Points to one or more existing identifiers.
Restriction: This attribute may be specified if the element is used.

## ISO Standards Tag Set (ISOSTS) version 0.5: A customization of NISO JATS version 0.4

#### Version of September 2011