GGU-STABILITY: "In rectangle" menu item

The proceeding corresponds to the definition of centre-points via a quadrilateral array. You must give the two diametrically opposed corners of a rectangle. The first corner point is set with the left mouse button. Then, position the mouse at the second point and press the left mouse button a second time. If the first corner point is not according to your wishes, you can set it again after pressing the right mouse button (press the left mouse button). After specifying the corners of the rectangle, you must enter the number of subdivisions (in x and y direction).

By repeating the above procedure you can define several centre-points arrays. You can also carry out this action after centre-points have been calculated.