Gets how Flex displays DataTip controls for the chart.
DataTip controls are similar to ToolTip controls, except that they display an appropriate value that represents the nearest chart data point under the mouse pointer.
Possible values include single and multiple. Use single to show the data point closest to the mouse. Use multiple to show the data tips within the range of the mouse cursor.
protected String dataTipMode { get; }
'Declaration
Protected Read Property dataTipMode As String