This UML 2.0: Infrastructure is the first of two complementary specifications that represent a major revision to the Object Management Group’s Unified Modeling Language (UML), for which the previous current version was UML v1.5. The second specification, which uses the architectural foundation provided by this specification, is the UML 2.0: Superstructure (ptc/03-08-02).
The UML 2.0: Infrastructure defines the foundational language constructs required for UML 2.0. It is complemented by UML 2.0: Superstructure, which defines the user level constructs required for UML 2.0.
The FTF needs to review and complete this section -- this version was derived from the “Introduction” section of the Preface in the Draft Adopted Specification.