In `dsCompareCurves`, in each line where it says: ``` print_help( opt_parser ) ``` e.g. [here](https://github.com/gtrichard/deepStats/blob/e3685a08db9d10bcb4f1b1742d77bbccfa4656cf/bin/dsCompareCurves#L97) the line should probably say ``` parser$print_help() ``` At least in [`argparse` v2.0.3](https://www.rdocumentation.org/packages/argparse/versions/2.0.3/topics/ArgumentParser) Simple Find > Replace fixes issue of `print_help` command not found upon inappropriate input.