partCount (Int) : Number of parts in the sub-tree (instances are counted once) partOccurrenceCount (Int) : Number of part occurrence in the sub-tree (instances are counted multiple times) triangleCount (Int) : Number of triangles in the sub-tree (instances are counted once, quadrangle count for 2 triangles) triangleOccurrenceCount (Int) : Number of triangles in the sub-tree (instances are counted multiples times, quadrangle count for 2 triangles) vertexCount (Int) : Number of surfacic vertices in the sub-tree (instances are counted once) vertexOccurrenceCount (Int) : Number of surfacic vertices in the sub-tree (instances are counted multiples times)