Thank you for your article about "Principles versus Patterns" in IEEE Computer Magazine in September 1997. \end{verbatim} Your description and discussion of the LoD matches with my experience. To answer your request, I have developed a pattern language based on the "Structure-shy" principle coming from the Law Of Demeter in: http://www.ccs.neu.edu/research/demeter/course/f97/lectures/powerpoint/PLAP.ppt I would appreciate your feedback. Please can you send me a copy of your paper: Deriving Patterns from Design Principles which will appear in JOOP. -- Karl