Organizing <Feature> and <Geometry> primitives

• DRM Classes are defined to organize primitives by providing semantic information to better organize the environmental data

• For <Geometry> primitives:

  • The organizing principles correspond to the subclasses <Aggregate Geometry>
  • All primitives ultimately reside under a <Union Of Primitive Geometry> or <Property Grid Hook Point> object

• For <Feature> primitives:

  • The organizing principles correspond to the subclasses of <Aggregate Feature>
  • All primitives ultimately reside under a <Union Of Features> object

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