Constant soft_edge::SYMMETRIES [−][src]
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Six quadrilaterals which happen to match planes of symmetry of the cube. These are the planes which exist between pairs of edges of the cube, and represent six possible ways we might end up with a quad as an interior face of an atom, plus a total of 24 possible ways we could end up with triangles as interior faces of an atom (by cutting those quads in half, four ways each.)