Making systems easier to use implies an ever increasing complexity in managing communication between users and applications. Indeed an increasing part of the application code is devoted to the user interface portion. In order to manage this complexity, it is important to have tools, notations, and methodologies which support the designer's work during the refinement process from specification to implementation. Selected revised papers from the Eurographics workshop in Namur review the state of the art in this area, comparing the different existing approaches to this field in order to identify the principle requirements and the most suitable notations, and indicate the meaningful results which can be obtained from them.

Inhalt
Invited Talks.- Retrospective and Challenges for Model-Based Interface Development.- Human Factors in Aeronautics.- Abstract Interpretation and Application to Interactive System Verification.- Moving Towards Implementation.- Device Models.- A Formal Description of Low Level Interaction and its Application to Multimodal Interactive Systems.- Deriving a Formal Model of an Interactive System from its UIL Description in order to Verify and Test its Behaviour.- Prototyping Device Interfaces with DSN/2.- Evaluating Formal Languages.- Toward More Understandable User Interface Specifications.- Towards an Integrated Proposal for Interactive Systems Design Based on TLIM and ICO.- The Evaluation of User Interface Notations.- Analysing Errors.- Supporting Error-Driven Design.- Risk Analysis, Impact and Interaction Modelling.- Design Assistance for User-Adapted Interaction.- Design, Specification and Verification.- GRALPLA: an Algebraic Specification Language for Interactive Graphic Systems.- Fusion Engines and Melting Pots.- Monolingual, Articulated Modeling of Users, Devices, and Interfaces.- Evaluating the Interfaces of Three Theorem Proving Assistants.- Validating Properties of Component-based Graphical User Interfaces.- Specifying and Reasoning About CSCW.- Reports from Working Groups.- The Namur Principles: Criteria for the Evaluation of User Interface Notations.- The Role of Formalisms.