E26 Physical Feature
This class comprises identifiable features that are physically attached in an integral way to particular physical objects.

This property associates an instance of E53 Place with the instance of E18 Physical Thing that determines a reference space for this instance of E53 Place by being at rest with respect to this reference space. The relative stability of form of an instance of E18 Physical Thing defines its default reference space.
This property identifies the instance of E18 Physical Thing that is removed during an instance of E80 Part Removal activity.
This property identifies the instance of E18 Physical Thing that is added during an instance of E79 Part Addition activity
THE MODEL
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