OptionalleaderStyle of the leader lines. By default, they're 0.75pt tx1 35%/65%.
OptionalnumberExcel number format code for label values. When sourceLinked is true, the labels follow
the source data's format instead, and this is only a fallback.
OptionalpositionWhere labels sit relative to their points. When absent, the chart type's default applies.
OptionalseparatorSeparator between the parts of a label.
OptionalshapeFill and outline of the labels. By default, there are none.
OptionalshowWhat each label shows. An empty list hides the labels.
OptionalshowWhether leader lines connect labels that have moved away from their points.
OptionalsourceWhether the number format follows the source data.
OptionaltextText style of the labels. It merges over the style of the labels these override, and then
cascades like other text. By default, labels are 9pt tx1 75%/25% in the minor font. See
ChartTextStyle.
Data labels for a plot or series.