The working drawing in architectural education and practice has been privileged as a way of describing our complex relationship with the environment. Although the drawing refers to something ‘outside itself’ (Evans 1997: 165), its value as a drawing is secondary to its primary purpose that is to describe a building. Robin Evans writes ‘architectural drawings are projections, which means that organized arrays of imaginary straight lines pass through the drawing to corresponding parts that are represented by the drawing’ (Evans 1989: 19). Whether perspective or production information, the architectural drawing refers to something outside itself. Its value as a drawing is secondary to its primary purpose that is to describe a building and, therefore, it is usually seen in conjunction with other drawings, whether or not this leads to construction.