Used to apply an effect that resembles bubbles.
[Center] field
Displays the center of the effect. The position of the center is specified by dragging the mark, provided in the dialog preview display.
[Radius] field
The radius of the effect is displayed as a number of pixels. The radius is specified by dragging the mark, provided in the dialog preview display.
[Strength] slider
Used to specify the degree of the bubble effect within a range of 1 to 100.