[Horizon attribute] Dialog
- [Thickness]
- The thickness of the horizon is specified per pixel.
- [Width]
- The width of the horizon is specified at a pixel unit or percent (example:50%).
- [Position x]
- Level position x of the horizon is specified.
- [A shadow is not attached.]
- If this check box is turned ON, a shadow will not be attached to the horizon but it will become a black line.