"The picture may be started with the dominant linear movements to break up the rectangle into related areas of meaning and space. This stage is followed by introduction of tones to further related areas and to start the foreword and backward relationships. Color is incorporated with the use of tones. Finally meaning is clarified and the solid and open areas are established with textures, lines and color." PRM 1946

Drawing is not putting a line around what we see. It is to give the sensation or entities in space by means of color tones. Extension and transparencies may be used. PRM 1946