This workshop is intended to provide an informal platform for Edinburgh researchers to exchange their research work and experiences in plan, process and activity representation, modelling and past experiences of using them in (real-world) applications. We plan to provide a few invited talks followed by sessions of open form discussion. The topics may be covered in the workshop include but not limited to: - State of The Art in Plan and Process Ontology - Emerging Standards in Process Representation - Innovative Real-World Applications based on Rich Plan Representations - Plan Representations in Computer-Supported Cooperative Work - Plan Representations in Web Pages Synthesis - Plan Representations in Knowledge Management - Plan Representations in Workflow Systems - Plan Representations in Multi-Perspective Modelling Open Forum Discussion Topics: 1. How can plan representation contribute to today's problems? How they have been used? Have they been successful? What are the deciding factors which make the use of plan representation a useful input for an application/research problem? We welcome both positive as well as "negative" research results - negative research results as when plan representation does not work. 2. Has the internet technology together with the abundance means of human communication, i.e. via voice, data, images or a combination of them, provides new opportunities and challenges for plan representation? Can plan representation provides (some) solutions to them? As a result of this workshop, a collection of related papers contributed by the speakers as well as by participants, and a summary of the open discussion from the workshop will be compiled and make available for all participants to the workshop. We look forward to seeing you !