Textual and/or photographic information that describes a work of art or image, recording its physical characteristics and placing it in context, as in records of works of conceptual art, earth art, or performance art.Example: see thumbnail aboveRichard Long (English, 1945-), A Hundred Mile Walk, 1971-2, pencil, map, printed text, photographs and labels on board, 21.6 x 48.3 cm, Tate Gallery, London. All of Long's work results from solitary walks he has undertaken in different parts of the world. This work documents the circular route he took on a walk made in December and January of 1971-2, by means of a map showing his location, a photograph of part of the landscape passed through and phrases recording his thoughts and reactions. See earth art and line.Also see posterity and video.