To change the data point symbol, select a data series (area shape or line), click Inspector in the toolbar, click the Chart inspector button, and then click Series. Choose a symbol from the Data Symbol pop-up menu. Adjust the size of the data point symbols by entering a value or using the stepper in the adjacent field.

To join points with a curve, select a data series (line), and then select Curve from the Connect Points pop-up menu.

To change the line color, select a line, click Inspector in the toolbar, click the Graphic inspector button, and then use the Stroke controls. See Changing the Style of Borders for instructions.