“…We have first to choose which transitions in a given CO-NETS O -NETS component may have their behaviour dynamically modifiable. This choice is conceptually important, since it is inconceivable in an information system, modelled here as CO-NETS O-NET S interacting components, to suppose that all its (elementary) behaviour is subject to evolution or change [25]. In other words, there should be at least a minimal part which remains stable over the whole life cycle, in the sense that it captures the system main properties.…”