The Selection tools are used to designate areas that you will be cutting out, cropping, painting within, or applying filters to. The area not selected is usually unaffected when you manipulate the image in any of these ways. When a selection is made around an area of the image, you will see what is often referred to as marching ants or the selection marquee running around the edge (see Figure 3.2).
Figure 3.2. A rectangular marquee drawn in the canvas.
The following is a summary of the Selection tools: