PRISM Usage Rights Namespace (pur:)
Namespace URI = http://prismstandard.org/namespaces/prismusagerights/2.1/

This is the PRISM usage rights namespace defined in the PRISM SPEC (Version 2.1), and is shared across PRISM implementations.

The PRISM Specifications are developed by the PRISM Working Group as part of the IDEAlliance PRISM Metadata Activity.

For more information about PRISM please visit the PRISM Website.