>> In the world that I inhabit, many systems are assembled from such 'SEooCs'. > So it is in automotive, I take it ISO 26262 allows such processes? > Is it explicit in the document? If so, where? > PBL Please start with ISO 26262: 2011, Part 10, Clause 9. Michael. Michael J. Pont, PhD SafeTTy Systems Ltd www.SafeTTy.net