| graphical element   | `geom` used                                                      | argument for further modification            |
| :------------------ | :--------------------------------------------------------------- | :------------------------------------------- |
| raw data            | `ggplot2::geom_point()`                                          | `point.args`                                 |
| labels for raw data | `ggrepel::geom_label_repel()`                                    | `point.label.args`                           |
| smooth line         | `ggplot2::geom_smooth()`                                         | `smooth.line.args`                           |
| marginal histograms | `ggside::geom_xsidehistogram()`, `ggside::geom_ysidehistogram()` | `xsidehistogram.args`, `ysidehistogram.args` |
