American advertising initially imitated British newspapers and magazines. Advertisements were printed in scrambled type and uneven lines, which made them difficult to read. Franklin better organized this by adding a 14-point type for the first line of the advertisement; although later shortened and centered it, making "headlines". Franklin added illustrations, something that London printers had not attempted. Franklin was the first to utilize logos, which were early symbols that announced such services as opticians by displaying golden spectacles. Franklin taught advertisers that the use of detail was important in marketing their products. Some advertisements ran for 10-20 lines, including color, names, varieties, and sizes of the goods that were offered.