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BackMatthias Ansorg ( https://ma.juii.net ) Description have to be even. Odd values are -=1 } module shape(hsh, ird, ord, fn4, hg y0=-0.1; y1=0; y2=abs(hsh); y3=hg-abs(hsh); y4=hg; y5=hg+0.1; if ( hsh >= 0 } module railSet(height) { railWithHoles(height); module railSupportSet(height) { railSupportCavity(height); 3D.