Extending the Potts and Bruns model for recording design rationale

An extension of the model proposed by C. Potts and G. Bruns (1988) for recording design rationale is presented. The extension consists of enriching the internal structure of justification in the Potts and Bruns model by making explicit the goals presupposed by arguments, the relations among arguments, and the first-class nature of these relations. The author describes the Potts and Bruns model briefly. A language whose underlying model extends the Potts and Bruns model and a system that supports the use of this language are presented. Related studies on recording design rationale are briefly discussed. The limitations of the language presented are discussed as further research problems