<urn> ISO-Specific Uniform Resource Name

For ISO Processing, this element holds an ISO Uniform Resource Name (URN) for this document, as specified by RFC 5141.


The <urn> element may be used only inside <doc-ident> within the three ISO-related standards metadata elements: <iso-meta>, <reg-meta>, or <nat-meta>. The element is retained for backwards-compatibility purposes.

Best Practice

For NISO STS documents going forward, the element <self-uri> should be used as an alternative to <urn>.

Base Attributes

Models and Context
May be contained in
Text, numbers, or special characters, zero or more
Content Model
<!ELEMENT  urn          (#PCDATA %urn-elements;)*                    >
Expanded Content Model


Tagged Sample

ISO-specific part of <doc-ident>