Not a patternbook, but there is a lot of useful experience from IBM OO practitioners in DevelopingObjectOrientedSoftware, an experience-based approach. IBM Object-Oriented Technology Center, Developing Object-Oriented Software, Prentice Hall, New Jersey 1997 [ISBN 0-13-737248-5] I started browsing the book, reading topics of immediate importance to my current practice and problems, but I kept returning to it, reading more and more of the topics in this voluminous book. A good read! -- MartineDevos ---- CategoryBook