Always make a thumbnail with the greatest depth that is needed to accurately represent a graphic, in addition to a black & white thumbnail which may be viewed on all machines. Note: This setting is the recommended choice for general-purpose use. Always make a thumbnail with the greatest depth that is needed to accurately represent a graphic. Select all thumbnail depths. Note: If all thumbnail depths are used, it will produce large catalog files. Always make black & white thumbnails. Note: Black & white thumbnails may be viewed on any machine. Note: Black & white images usually look best as eight-bit grayscale thumbnails. Always make eight-bit thumbnails. Note: These can only be viewed on machines with Color QuickDraw. Note: For color images, the System palette is used. Always make 16-bit thumbnails. Note: These may only be viewed on machines with 32-Bit Color QuickDraw. Note: If made with QuickTime installed, these are only viewable on machines with QuickTime; however, without QuickTime, they use more disk space. Always make 32-bit thumbnails. Note: These may only be viewed on machines with 32-Bit Color QuickDraw. Note: If made with QuickTime installed, these are only viewable on machines with QuickTime; however, without QuickTime, they use more disk space.