, sized surface used for book and cover stock. Arrowhead: A symbol shaped like an arrowhead that is used in illustration to direct a leader line. Reference, leader line Artwork... together and or fastening them to a cover, to form single copies of a book. Black Out: Also referred to as black patch; a piece of masking material which is used in layout to mask... black stroke that makes it more conspicuous. Bond: A grade of durable writing, printing and typing paper that has a standard size of 17x22 inches. Book: A general classification...