The Inventory Images tab allows setting of three (3) base images (Primary Image, Thumbnail and Icon) along with rollover text for each. These are the primary images that AbleCommerce uses for each item. Then the Additional Image URL grid allows for an unlimited number of additional images. The little globe buttons are used to open a web browser to display the photo from the URL entered. The X button beside the globe icon is used to delete the selected image. See: Inventory Images Tab