Before using this function

the icon for to use only lines with 45°must be selected;

the icon .for to graduate the line

with one step in column direction and

with two steps in row direction must be also active;

  1. Clicks on with in the picture; this fixes the down position of the diamond;
  2. Move the mouse with pressed button in the direction right and top;
  3. To fix the diamond release the mouse button;