Used to apply a gradation effect to an image, based on the foreground colors.
[Left] field
Used to specify the leftmost position at which the gradation effect starts with an integer between 0 to 100. The height of the leftmost point is specified by dragging the
mark, on the left of the preview in the dialog.
[Right] field
Used to specify the rightmost position at which the gradation effect starts with an integer between 0 to 100. The height of the rightmost point is specified by dragging the
mark, on the left of the preview in the dialog.
[Transparency] slider
Used to specify the transparency of the gradation effect with an integer between 0 and 255.