You can use this mode to paint tones or highlights onto your character. It also automatically flattens each of its brush lines so it does not add new brush lines on top of existing ones. The Repaint Brush is used to repaint zones that have already been painted, it will not affect empty zones or pencil lines.
When the Draw Behind mode is enabled, the lines you draw will appear behind the art that already exists. The Normal Brush Mode creates contour lines as you draw, adding each brush lines on top of the last ones. These are the options available for the Brush tool: When you select the Brush tool, its properties and options appear in the Tool Properties view.