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This document specifies the contents of a context of use description for an interactive system to be designed or evaluated. The context of use description is applicable to all kinds of interactive systems, products, services or a combination of these. The description of the context of use is intended to be used as part of system-level documentation resulting from development processes such as those in ISO 9241-210 and ISO/IEC JTC 1/SC 7 process standards. This document does not prescribe any kind of method, life cycle or process. The context of use information item can be integrated into any type of process model. NOTE For the purpose of establishing process models, ISO/IEC TR 24774 specifies the format for process models. In addition, ISO/IEC 15289 defines the types and content of information items developed and used in process models for system and software life cycle management. ISO 9241-220 provides guidance on processes for enabling, executing and assessing human-centred design. This document also describes the purposes for which a context of use description is used. While this document specifies the required content components of a context of use description, it does not prescribe any particular structure or layout for documenting the context of use.