| graphical element        | `geom` used                   | argument for further modification |
| :----------------------- | :---------------------------- | :-------------------------------- |
| raw data                 | `ggplot2::geom_point()`       | `point.args`                      |
| box plot                 | `ggplot2::geom_boxplot()`     | `boxplot.args`                    |
| density plot             | `ggplot2::geom_violin()`      | `violin.args`                     |
| centrality measure point | `ggplot2::geom_point()`       | `centrality.point.args`           |
| centrality measure label | `ggrepel::geom_label_repel()` | `centrality.label.args`           |
| pairwise comparisons     | `ggsignif::geom_signif()`     | `ggsignif.args`                   |
