abstract 6..7 Trimesh
	xor cycle
		V
		F
	RelaxParameter
	xor smoother
		Jacobi
		colorGS
		line
		zebraLine
	preSmoothing -> integer
	[preSmoothing >= 0]
	[preSmoothing <= 8]
	postSmoothing -> integer
	[postSmoothing >= 0]
	[postSmoothing <= 8]
	[preSmoothing + postSmoothing > 0]
	alpha -> integer
	[alpha = 5 || alpha = 10 || alpha = 15 || alpha = 20 || alpha = 25 || alpha = 30 || alpha = 35 || alpha = 40 || alpha = 45 || alpha = 50 || alpha = 55 || alpha = 60 || alpha = 65 || alpha = 70 || alpha = 75 || alpha = 80 || alpha = 85 || alpha = 90]
	beta -> integer
	[beta = 5 || beta = 10 || beta = 15 || beta = 20 || beta = 25 || beta = 30 || beta = 35 || beta = 40 || beta = 45 || beta = 50 || beta = 55 || beta = 60 || beta = 65 || beta = 70 || beta = 75 || beta = 80 || beta = 85 || beta = 90]
	[alpha + beta >= 90]
	[alpha + beta < 180]
Cp : Trimesh
[cycle]
[smoother]
[preSmoothing]
[postSmoothing]
[alpha]
[beta]