The article discusses a computer-aided design tool called LINK-UP, which helps in designing notification systems. The tool aims to promote the reuse of design knowledge, compare different design products, and support long-term research growth in Human-Computer Interaction (HCI). By focusing on critical parameters, the tool organizes the design process and overcomes challenges to achieve its goals. The approach contrasts with traditional task-based modeling methods and offers new possibilities for integrating reusable design knowledge, HCI processes, and design support tools.