Jitter determines the range of a setting. For example, the opacityOpacity is the density of a pixel. Any amount less than 100% will have some transparency. Opacity se... More of a brush stroke More can jitter between 10% and 100%. Size, opacity, scatterScatter is the distance a brush tip can diverge from the stroke. A scatter amount can be positive or... More, and sometimes flowFlow is a brush setting that control's how quickly color is applied in a stroke. Think of it as the ... More and be controlled with a jitter amount.