And now, the DRM — 360 classes . . .

• ‘Primitive’ objects

  • <Point Feature>, <Linear Feature>, <Areal Feature> <Property Grid> <Polygon>, <Line>, <Point>, <Image>, <Sound>...

• Topology

  • nodes, edges, faces, ...

• Modifiers

  • <Color>, <Classification Data>, <Transformation>, <Location> ...

• Containers and Organizers

  • <Transmittal Root>, <Environment Root>, <Libraries>
  • <Feature Hierarchy> and <Geometry Hierarchy>

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