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This document describes the use of object-oriented analysis and provides a detailed context in which the topic can be explored. The North American Electric Reliability Council developed a new iteration of their Transaction Information System (TIS), a distributed system used for documenting the contractual and physical characteristics of energy transactions. This iteration was developed using a simplified object-oriented approach, which has led to a somewhat complex but well developed system for describing that information. This document describes the process in depth, from early conceptual discussions to detailed implementation, with relevant examples describing how concepts were abstracted and developed.