Typography is the art and technique of arranging type. The
arrangement of type involves the selection of typefaces, point size,
line length, leading (line spacing), adjusting the spaces between
groups of letters (tracking) and adjusting the space between pairs
of letters (kerning). Type design is a closely related craft, which
some consider distinct and others a part of typography; most
typographers do not design typefaces, and some type designers do not
consider themselves typographers.