Principle: When a person falsifies something with the intent to deceive another person or entity is forgery and is a criminal act. Changing or adding the signature on a document, deleting it, using or possessing the false writing is also considered forgery. In the case of writing/painting to fall under the definition, the material included must have been fabricated or altered significantly in order to represent something it is actually not.

Facts: David made a living traveling from city to city, selling paintings that he claimed were done by great artists. Since the artists' signatures were in place, many people fell for them and purchased the paintings. One of these artists saw three of his alleged paintings in a City gallery containing his name. He knew these were not his works and he complained to the police. Police traced David and initiated legal proceedings. Is David guilty of any offence?