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Abstract:
Work is described which seeks to use a common representation of tasks, plans, processes and activities based on the notion that these are all "constraints on behaviour". This representation can form a basis for mixed initiative user/system agents working together to mutually constrain task descriptions and plans and to coordinate the task-oriented enactment of those plans. It is well suited to an incremental refinement approach to planning as is found in many modern planners. It forms a potentially useful bridge between practical work on planning, theoretical descriptions of planning, constraint management, and work in other fields such as workflow and process management.