Editing the Plot Properties
To change the appearance of a plotted diagram, right click the diagram and select Properties. In the Plot Properties window you can change the fonts and colours, and add a title, for example.
You can also change the colour, stroke (solid/dashed/dotted/dash_dot) and line width of a particular series of lines in the plot by double-clicking one of the lines in the series. In this way, you can also toggle whether data points should be shown or not for a series of lines. The crosshair cursor turns into a cursor resembling a pointing hand when it is placed over a line that can be clicked but if you hold down the <Ctrl> key, this does not happen (the cursor continues to be shown as a crosshair).
To configure the default settings for plotting, go to the Options window and on the Console Mode tab click the Plotting node in the tree.