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- <radius>:only for spheres. Is a list of reals with the radius or each sphere {r0 ... rne-1}
- <normals>:only for circles. Is a list of reals with the radius and normal to the plane or each circle {r0 nx0 ny0 nz0 ... rne-1 nxne-1 nyne-1 nzne-1}
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The preprocess and postprocess meshes are different objects, and there are different commands for them.