A GRID IS TWO SETS OF AXES ORGANISED into a larger pattern where each group is oriented in a different direction (see Axis and MATBH: Directionality). The two directions create a situation where each set will cross the other at either regular or irregular intervals. The result is the ordering of axes into a complex network of lines. Since grids involve points where axes cross, the concept also includes the idea of intersection; so, a grid can be thought of as a regular pattern of junctions or meeting points (see Node). Where lines are about movement, multiple intersections offer locations for activity and opportunity for engagement.