The quest for more productive ways of developing high quality software has been ongoing and software product lines promises to improve product qua-li-ty and the development speed at a fraction of the cost. Common examples of product lines in other areas include mobile phones, cars, consumer electronic devices such as TVs and the like. The products in a product line all share some common features and there are some features that are specific to some pro-ducts only. Crucial to this approach is the large-scale reuse of the product line software architecture. This book deals with the problem of...