"Effect: Half ND" dialog box

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.