addLine(x1, y1, x2, y2 [, color [, lineWidth ]])

Adds a line to the chart.

Argument	Default	Description
x1	(Mandatory)	The x pixel coordinate of the first endpoint of the line.
y1	(Mandatory)	The y pixel coordinate of the first endpoint of the line.
x2	(Mandatory)	The x pixel coordinate of the second endpoint of the line.
y2	(Mandatory)	The y pixel coordinate of the second endpoint of the line.
color	LineColor	The color of the line.
lineWidth	1	The width of the line.

A Line object representing the line added. You may use this object to fine- tune the appearance of the line.