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All slides shall be marked with a dot or other thumb mark (spot) in the lower left corner of the mount as the maker intends the image to be shown. A title may be placed on the front of the slide to the left of the thumb mark (when it is turned upside down) as shown below. Maker’s name shall appear on the backside – opposite the thumb mark as shown below. Note: the back of the slide is the side that usually has the "Brand Name" of the film processor and it is also the side that goes towards the screen when projected.