In NetSim, “objects” refers to pipes, nodes, production plants, accumulators, heat exchangers, pumps and valves. The object has an internal ID which is hidden from the user and a name which is unique within the object type. I.e. there is e.g. only one pipe with the name P1189, but there could well be a node with the same name! A range of information is linked to each object individually, and a range of information is linked to every object's occurrence in a model.