This book works in concordance with references to offer a suite of practical real-world examples to help novice and expert users of the UML to understand the whole language (holistically and cohesively), including rules of usage and principles of composition, style guidelines, and a roadmap for successfully applying the UML. The examples are presented in a "fairly intuitive/evolutionary" manner that demonstrate the key concepts of the UML and help readers explore the wide range of uses of the UML.