Paint Shop Pro has several painting tools: the Paint Brush, the Clone Brush, the Color Replacer, the Retouch tool, the Eraser, the Picture Tube, the Airbrush, and the Flood Fill tool. You use these tools to apply, change, or remove colors in your image.
The Flood Fill tool is a very versitile tool. With it you can fill a selection with a solid color or a gradient or you can flood fill with a preset pattern. With Version 6, you can also now set a pattern texture for your flood fill.