as_params               Produce @param roxygen sections for options
as_roxygen_docs         Generate Standalone '?options' Documentation
defining_options        Defining Options
envvar_fns              Generator functions for environment variable
                        processors
get_options_env         Retrieve options environment (experimental)
naming                  Define Naming Conventions
naming_formats          Naming Convention Formatters
opt                     Inspecting Option Values
option_spec             Specify Option
