The effect is demonstrated in the diagrams below, which show plan views of four SCTNs meeting at a node point. The top flanges of the SCTNs are coplanar and none of the SCTN ends have been cut back. In Figure 15:1.: Effect of SCTN DRGP Attribute (a) the DRGP attributes of all four SCTNs have been left at 0; as a result DRAW is unable to determine how to draw the intersection lines between the SCTNs and so draws the full outlines of all SCTNs. In Figure 15:1.: Effect of SCTN DRGP Attribute (b) the DRGP attributes of the four SCTNs have been set as indicated, which confers a priority order on them. As a result, DRAW is able to determine the representation that is intended.