08.07.2002 Layers allow you to make changes to an image without altering your original image data.           08.07.2002 Layers allow you to make changes to an image without altering your original image data.           08.07.2002 Layers allow you to make changes to an image without altering your original image data.         Layers allow you to make changes to an image without altering your original image data. For example, you might store photographs or elements of photographs on separate layers and then combine them into one composite image.       Think of layers as sheets of acetate stacked one on top of the other. Where there is no image on a layer (that is, in places where the layer is transparent), you can see through to the layers below. All layers in a file have the same resolution, start with the same number of channels, and have the same image mode (RGB, CMYK, or Grayscale).    Copyright 2002, Your Company Name