ABSTRACT
Elements of the design process, individual design operations (see chapters 10, 11 and 12), are often relatively complicated and need planned procedures, rules for behavior, design tactics, to be used by engineering designers in carrying out the smaller tasks which have relatively concrete problem formulations. The engineering designer’s tactical instructions, activities and behavior in design operations can be guided by suitable methods, often pragmatically developed, related to the technical means used to record the results of thinking, even if preliminary and transient [380], to allow interaction between the mental and external representations, see chapter 16.
