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<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.

Usage/Remarks

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>.
Attributes

Base Attributes

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

(#PCDATA)*

Tagged Sample

ISO-specific part of <doc-ident> 

...
<doc-ident>
 <sdo>ISO</sdo>
 <proj-id>57385</proj-id>
 <language>en</language>
 <release-version>IS</release-version>
 <urn>iso:std:iso-iec:guide:71:ed-2:v1:en</urn>
</doc-ident>
...