--010 replace ref to xml:lang with local attribute definition and remove import of 'xml.xsd'-- --034 modularize xml schemas-- --037 set PLM_container version to 2.0-- --038 add complexType 'PLM_context'-- --039 add complexType 'PLM_message-- --052 rename complexType PLM_container to PLM_core_container-- --063 rename element PLM_container in complexType PLM_message to PLM_core_container-- --058 060504 add optional attribute opaque_server_data to complexType PLM_object-- --089 add Element Incoming_type to PLM_context-- --094 061020 set element PLM_core_container in complexType PLM_message to nillable--