Typography is the art and technique of arranging type to make written language legible and appealing. It involves selecting typefaces, point sizes, line lengths, leading, and letter-spacing. Typographical elements appear in documents, presentations, clothing, maps, vehicle panels, household appliances, poetry, and more. Since digitization, typographical uses have spread to web pages, screens, and video games. The practice of typography covers all aspects of letter design, including both mechanical processes like typesetting and typefaces, and manual processes like handwriting and calligraphy.