| clone_and_merge | Create a local, altered copy of an options manager |
| defaults | Request default option values |
| inlist | Option checkers |
| inrange | Option checkers |
| is_setting | Find out if we're setting or getting |
| options_manager | Create a new options manager. |
| package-settings | Convenient options settings management for R |
| reset | Reset options to default values |
| reset_options | Reset general options in 'options' to factory defaults. |
| reset_par | Reset graphical options in 'par' to factory defaults. |
| settings | Convenient options settings management for R |
| stop_if_reserved | Check for reserved option names. |