Printing dots, also known as halftone dots, are a printing technique used to create the illusion of different shades and colors. This is done by using a pattern of tiny dots that vary in size and spacing. The term 'TITTLES' refers to the small cross-shaped marks that are placed between two letters in some typefaces. These marks help to distinguish between similar looking letters, such as an 'i' and an 'l'. TITTLES are often used in printing to ensure that text is legible and clear.