This is an XML namespace defined in the WSCL 1.0 specification. The 14 March 2002 Web Services Conversation Language (WSCL) 1.0 specification is the latest version as of $Date: 2002/03/14 09:32:14 $.
For more information about XML, please refer to The Extensible Markup Language (XML) 1.0 specification. For more information about XML namespaces, please refer to the Namespaces in XML specification.