It defines 18 new data types:
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- 3D unit vector
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- 3D vector
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- 3D box
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- circle
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- circular arc
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- ellipse
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- line segment
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- path
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- point and ECS point
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- polycurve
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- polygon
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- polygon set
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- polyface
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- polyline and polyarc
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- polymesh
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- polysurface
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- quadrilateral
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- rectangle
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