Graph Options allow you to configure the visual
appearance of the graph. Is it possible to select which curves are displayed
and in the case of split graphs, whether to display in the upper or lower
graph. For each line curve, you can choose colour, thickness and style, if its vertical axis and its
minimum and maximum value on the graph is to be shown. You can also choose background
colour, the minimum and maximum value for the horizontal axis and if colours
should be used to represent the various channels or must be associated with
laps/sessions.