dbCreateDonut

dbCreateDonut( 
d_cellView 
txl_layerPurpose 
l_point 
x_outR 
x_holeR 
) 
=> d_donut / nil

Creates a donut (two concentric circles).

d_cellView	Database ID of a cellview.
txl_layerPurpose	Name, number, or a list of layer or layer-purpose pair.
l_point	Defines the center of the donut.
x_outR	Outer circle radius, must be larger than x_holeR.
x_holeR	Inner circle radius.

d_donut	The dbObject of the donut.
`nil`	The donut is not created.

dbCreateDonut(cv 1 0:0 100 50)C