Typography is the art and technique of display type, type design, and change type glyphs. Type glyphs are produced and customized using a range of illustration techniques. Typography has long been a very important element of promotional stuff and advertising. Designers frequently utilize typography to deposit a theme and feel in an advertisement; for example using bold, large text to convey a particular message to the reader. Type is often used to draw attention to a particular advertisement, combined with efficient use of color, shapes and images.