Slice controls used to control the slices appearance of pie chart in AIV.

Border Width: It used to give border size to every slice individually in pie chart. as user increase it the border size increase, as user decrease it border size get reduced.

Border Color: it used to give color in the border of pie slices.

Border Opacity: it used to control the visibility level of border, by using the draggable slider user can increase or decrease border opacity in pie chart.