This image shows a pie chart three times with three selection effects. The largest segment (with 31.07% of the share) is selected.
In the first instance, the effect is highlight
and the slice has a border. The border is created with a black outline outside a white outline to give the effect of a highlight.
In the second instance, the effect is explode
and the slice is visibly separated from the rest of the chart.
In the third instance, the effect is highlight with explode
, where both the above effects are combined.