4      3.0      2.0       6.5       0.25
    .5       .5
   -.5       .5
   -.5      -.5
    .5      -.5


First line:
 4      3.0      2.0       6.5       0.25
 |
 4  = stack 4 antennas with coordinates as 4 lines below.
      In the example the stacking distance is 1 unit in both x and y.

 4      3.0      2.0       6.5       0.25
         |
        3.0 = Unit of length in meters.
              In the above example, stack 4 antennas
              at 3.0 meters separation vertical and horisontal.

 4      3.0      2.0       6.5       0.25
                  |         |         |
                 2.0       6.5       0.25 = Controls calc at variable
                                            stacking distance.
                                            Start at unit= 2.0m
                                            End at unit=6.5m
                                            Step size=0.25m