This property describes the real that is phenomenal, 4 dimensional point sets or volumes in spacetime that the trajectory of an instance of E18 Physical Thing occupies in the course of its existence. We include in the occupied space the space filled by the matter of the physical thing and all its inner spaces.
Physical things consisting of aggregations of physically unconnected objects, such as a set of chessmen, occupy a number of individually contiguous spacetime volumes equal to the number of unconnected objects that constitute them.