Graphic symbols are visual representations of ideas, concepts, or objects. They can be used to communicate messages without the need for words. A glyph is a specific type of graphic symbol that is usually composed of a single character or symbol. PIE is another type of graphic symbol, which is composed of multiple characters or symbols arranged in a circular shape. An ICON is a small picture or symbol used to represent a program, file, or command on a computer. Ideograms are graphic symbols that represent an idea or concept rather than a specific object. Runes are ancient symbols used by Germanic and Scandinavian cultures to communicate messages. All of these types of graphic symbols are used to convey meaning without the need for words.