These tools help you draw, modify, enhance your images. Some tools have extra
properties like line width or brush shape. These can be selected in the lower portion of the
tools window. Some of these tools use the color selected in the Colors window.
Depending on which mouse button you press you can select the foreground or
background color. Left mouse button is for foreground color. The Smooth
edges and
the Use filter on alpha channel options can be applied on some tools. These are
located on the main toolbar. Many of this tools will behave different when you hold down
shift. You can cancel the drawing by pressing Esc.