Narrator: This wall drawing is by Sol Lewitt and called, in full, 'A Wall Divided Vertically into Fifteen Equal Parts, Each with a Different Line Direction and Colour, and All Combinations'. Jeremy Lewison, former Director of Collections at Tate, explains how it's realised from the artist's carefully worded directions.
Lewitt starts out with the basic vocabulary of four elements: the horizontal line, the vertical line and diagonal lines in two different directions. The drawing progresses by superimposing one kind of line on top of another. And the work is a series of variations and combinations of the superimposition of these types of lines. Although the order of the superimposition could change within the piece, the outcome is always the same, which is the culmination of all these lines in one panel. Thus, if you equate the final outcome of the work with meaning, the meaning is constant.