ChartDataLabel.topMode property. Gets or sets the interpretation mode of the [ChartDataLabel.top](../top/) property value: whether it sets the location of the data label from the top edge of the chart of from the position specified by its [ChartDataLabel.position](../position/) property....calculated using title text and font. const doughnutCenterY = titleAreaHeight...can be calculated using label font. const oneCharLabelWidth = 12...