“…Most of these extensions are devoted to add object oriented features on top of (coloured) Petri nets (see e.g. [2,3,4,5,6,9,11]): the object structure is represented through a net, and dynamic reconfiguration features are obtained by some mechanism external to the net. There are two main differencies w.r.t our approach: we think that our model lies at a lower level of abstraction, because the object oriented features are not embedded in mobile nets, but they need to be encoded; secondly, our aim is to embody dynamicity in our model, and not to add it by an external structure.…”