If you want to keep an image from being accidentally erased (either with the Erase button or by using the Erase menu), you can mark that image for protection. To protect one or more images, press the Menu button and choose Protect. Then use the Quick Control Dial to view the image to be protected. Press the Set button to apply the protection. A key icon will appear at the upper edge of the information display while still in the protection screen, and when reviewing that image later (see Figure 3.18). To remove protection, repeat the process. You can scroll among the other images on your memory card and protect/unprotect them in the same way. Image protection will not save your images from removal when the card is reformatted.