For Donald Judd, drawing was a way of thinking, a way of working out possibilities and solving questions.  Rarely undertaken as their own objects, drawings were where the lines were put down to make sure they made sense and to communicate to others. In his early career, Judd drew as a classically trained draftsman. Later, when the works moved into three dimensions, the drawings became more basic and he sketched works in variations that he was thinking about and as finished descriptions of works that he was going to get fabricated. For architecture, the drawings had the same purpose: working out possible designs and communicating them.