The ‘marketing concept’ proposes that in order to satisfy the organizational objectives, an organization should anticipate the needs and wants of consumers and satisfy these more effectively than competitors. This concept originated from Adam Smith’s book The Wealth of Nations, but would not become widely used until nearly 200 years later.

Illustration is the use of digital tools to produce images under the direct manipulation of the artist, usually through a pointing device such as a tablet or a mouse. It is distinguished from computer-generated art, which is produced by a computer using mathematical models created by the artist. It is also distinct from digital manipulation of photographs, in that it is an original construction “from scratch”.