@xmlns:ali NISO ALI Namespace (NISO Access License and Indicators)

This is not an attribute, but the namespace pseudo-attribute. The value provides a prefix to use for the ALI (NISO Access License and Indicators) elements. All namespace prefixes must be associated with a URL, and the prefix “ali” has been set to the URL http://www.niso.org/schemas/ali/1.0/ as per the NISO ALI best practices recommendation.