[]
Returns the point marker settings for the sparkline group.
ISparkPoints Points { get; }
ReadOnly Property Points As ISparkPoints
worksheet.Range["A1:C1"].Value = new object[] {1, 3, 2};
ISparklineGroup group = worksheet.Range["D1"].SparklineGroups.Add(SparkType.Line, "A1:C1");
ISparkPoints points = group.Points;
points.Markers.Visible = true;