Removes all overrides for a specific variable (or all variables), resetting them to auto-detected defaults.
Arguments
- var_name
[character, optional] The variable name to reset. If
NULL(default), resets all overrides.- options_file_name
[character, optional] The name of the options file. If
NULL(default), the user will be prompted interactively.- options_dir
[character, optional] The directory containing options files. If
NULL(default), the default directory is used.