The Line form ()
draws a point-to-point line joining
up the points making up the data set.
Note that for a large and unordered data set this can lead to a big
scribble on the screen.
The configuration options are:
Thickness
Line thickness in pixels.
Dash
Dash pattern. The line is solid by default.
Antialiasing
If true, pixels are blurred to give the line a smoother appearance.