Displaces the dots by moving them around in a circular wave pattern originating from the center of the image.
The Amount (technical term; frequency) slider will change the number of waves in the pattern. You can have between zero (no waves) and five waves, in steps of tenths.
Shift controls the offset of the waves from the origin (center of image). You can shift from 0° to 359°; one complete wave.
Setting the Size (technical term; amplitude) of the waves changes the amount of displacement caused by the waves. Setting this slider to zero will not cause any displacement. This can be set from 0% to 100%.