1. Laboratory of Intelligent Engineering Systems Óbuda University, John von Neumann Faculty of Informatics, Institute of Applied Mathematics Before start the work in model space

2. Óbuda University IAM-LIES László Horváth No engineering drawing, no graphical editing. Definition by communication with model generation procedures Definition of feature which modify the model along contextual chains. Object model. Classes in taxonomy. Object includes parameters, relationships, and procedures. Model construction is done by the definition of contextual object instances. Seeing and thinking in an information space. Knowledge based system with threshold knowledge. Threshold knowledge can be broken in own responsible when it does not make execution of modeling activity impossible. Model construction Information technology aspect of product definition in model space.

3. The viewport is only a communication surface with dynamic navigation. Graphical instructions for mathematical procedures. Danger: eye may synthesize information which is not in the model. Unintentionally recorded context results unwanted model characteristics.. Decreased role of computer graphics No messages to assist at evident activities. Óbuda University IAM-LIES László Horváth