Name	Value	Description
cdrEdgeLinear	0	Specifies linear edge
cdrEdgeSquared	1	Specifies squared edge
cdrEdgeFlat	2	Specifies flat edge
cdrEdgeInverseSquared	3	Specifies inverse-squared edge
cdrEdgeMesa	4	Specifies mesa edge
cdrEdgeGaussian	5	Specifies Gaussian edge