<Dl> <Dd> Printmaking art techniques such as engraving, etching, woodcut and lithography are covered more fully in their respective articles . </Dd> </Dl> <Dd> Printmaking art techniques such as engraving, etching, woodcut and lithography are covered more fully in their respective articles . </Dd> <P> Line art or line drawing is any image that consists of distinct straight or curved lines placed against a (usually plain) background, without gradations in shade (darkness) or hue (color) to represent two - dimensional or three - dimensional objects . Line art can use lines of different colors, although line art is usually monochromatic . Line art emphasizes form and outline, over color, shading, and texture . However, areas of solid pigment and dots can also be used in addition to lines . The lines in a piece of line art may be all of a constant width (as in some pencil drawings), of several (few) constant widths (as in technical illustrations), or of freely varying widths (as in brush work or engraving). </P> <P> Line art may tend towards realism (as in much of Gustave Doré's work), or it may be a caricature, cartoon, ideograph, or glyph . </P>

What are the functions of line in art