You can specify a point origin relative to a parametric point. If the parametric point is relocated; all parameterized points are relocated accordingly. For example, the Macpherson strut suspension system of a vehicle has a topological structure. Whenever a new vehicle is designed, the suspension configuration is different. To facilitate changes in the suspension configuration, the hard points of the suspension are defined as parametric points. The modification of parametric points automatically applies to all parameterized points. You can define the parametric points by means of Parametric Point tool in the Subentity menu.
Figure 1 Parametric point
Figure 2 Parametric Point icon in the Parameter group of the Subentity tab