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Experience indicates that effective complexity management mechanisms automate mundane development tasks and provide strong support for separation of concerns. For example, current high-level programming languages and integrated development environments provide abstractions that shield developers from intricate lower-level details and offer automated support for transforming abstract representations of source code into faithful machine-executable forms. The Object Management Group initiated the Unified Modeling Language 2.0 effort to address significant problems in earlier versions. While UML 2.0 improves over earlier versions in some aspects, its size and complexity can present a problem to users, tool developers, and OMG working groups charged with evolving the standard.