The Curve Tool allows you to draw a curve. To use the Curve Tool ,
1. Select the Curve Tool
2. Click to set the first point. The curve line will begin here.
3. Click to set the second point (this point controls the direction and strength of the curve.)
4. Click to set the third point (this is also a control point)
5. Click to set the forth point, or, click the third point again to make it the final point. The curved line will end here.