Symmetries D4, period 2, strongly invertible
Lists (D4, r) (of coordinates along the path)
Fourier series (D4, ) (of coordinate functions parametrized in [-π,π])
Scad files (D4, r) (for use in Openscad or similar compiler)
Stl files (D4, r) (for use in a 3D printer, etc)
List of knots, table of symmetries
19.6.15