Painting is a method of creating a brush from the presented data. In order to use Painting the current brush must be both enabled and have it's display attribute turned on (see Brush Toolbox). In the parallel coordinate and scatterplot displays painting is accomplished by holding down the Shift key on the keyboard and dragging the mouse over points of interest. As long as the Shift key is held down the mouse cursor will continue to behave as a virtual paintbrush. When the Shift key is released, a brush will be generated that contains all the points that were painted.