A default stylesheet is provided to give the basic structure and layout of the chart.
To make some simple style changes for your own applications, when a chart is created the chart nodes are tagged with particular class names so that you can easily pick them out and apply your own styles.
These class names and their purposes are:
// FIXME tables
For more control over the styles used, you are of course free to override any
of the styles provided by the default stylesheet in the usual manner perhaps by
making use of the standard
The chart below shows custom styles applied to various elements using only these class names.