Drawing is fundamental to visual art. Three-dimensional art
often begins life as a sketch on paper. Likewise, a doodle on a
page can become the inspiration for a lithography. Drawing is
also an end in itself, illustrated by the works of William
Blake, and the more modern advent of cartoon, animation, and
digital drawing. The line between what is drawing and what is
painting can blur quickly. Drawings can have painterly elements
and vice versa. For example, using techniques like shading and
blending can greatly increase a drawing's sense of dimension,
texture, and tonal value. The large variety of drawing
instruments offers the artist scope and room for
experimentation. The most common drawing instruments are
pencils, pens, inked brushes, colored pencils, crayons, chalk,
and pastels. Markers and spraypaint, however, are the drawing
instruments of the graffiti artist, and the question of which
two-dimensional surfaces are acceptable on which to draw
provides diaolgue and controversy far beyond the walls of the