XML Information Security Marking definition in Computer Security terms:
Definition(s): Provides definitions of and implementation of the XML attributes used as containers for Controlled Access Program Coordination Office (CAPCO)-defined sensitivity and classification markings to be applied to all or part of an XML document. The markings are implemented using ICML.
Source(s): NIST SP 800-95 (Intelligence Community Metatdata Working Group Information Security Marking v2.0.2 Downloads)
reference: CSRC Glossary