ABSTRACT
Empirical surveys have shown that an average of 48% of the code in new business applications with graphical user interfaces (GUIs) is devoted to the user interface portion. The development of design aid tools for offering the user interface designer assistance in understanding, searching and applying ergonomic design knowledge was the starting point for the GMD project Interface Design Assistant (IDA). The primary goal of this project is to incorporate domain competence in user interface development tools to empower the user interface designers. The design aid tools assisting the designers of GUIs during the design process have been developed in the IDA project. All design aid tools are integrated in a user interface management system. Designers who are unaware of human factors knowledge about user interface design do not perceive a breakdown if one of the design guidelines is violated.
