Manfred Nagl has been a very active, productive researcher with great impact in a number of di?erent areas,e.g., graphtransformationsand their applications to a wide range of disciplines, software engineering environments, engineering designprocesses,andsoftwarearchitectures.We ?veofhisnumerousacademic descendants were in?uenced deeply by Manfred s work. For this reason, we decided to prepare this volume, which was edited in his honor on the occasion of his 65th birthday. A pre-release (book of abstracts) was presented to Manfred atacelebrationatRWTHAachenUniversityinJune2009.Thecompletevolume followed when Manfred received an honorary doctorate from the University of Paderborn in November 2010. Altogether, we collected 30 papers. The types of papers vary signi?cantly, including classic research papers in the style of journal articles, surveys of - cused research areas, essays re?ecting on certain research topics, and papers summarizing long-term work conducted by Manfred Nagl. All papers were subject to a thorough quality control process involving at least two reviews for each paper. The editors were assisted by numerous ad- tional reviewers, whose work is gratefully acknowledged.