How can the documentation of concepts for complex sociotechnical systems, such as the adoption of groupware, be incorporated into practices of PD? Documents are important in supporting participants in their decision-making and in serving as a guidance for the ongoing project. To create such documents a bstract graphical models and illustrative material can be used. There is evidence which suggests that they can be successfully employed if they are embedded into a communication process which is facilitated in a specific manner: The socio-technical walkthrough (STWT) that supports a participatory process during which concepts of such systems are (re-)considered step by step. A case study describes the challenges and benefits of the STWT paying special attention to aspects such as facilitating strategies, required preparation, training, characteristics of the diagrams, and accompanying work. Categories and Subject Descriptors D.2.1 [Software Engineering]: Requirements/Specifications – ...