help displays help on a module<U+2019>s objects and functions in much
the same way help does for package contents.
help(topic, help_type = getOption("help_type", "text"))fully-qualified name of the object or function to get help for,
in the format module$function.
character string specifying the output format; currently,
only 'text' is supported.
help is called for its side-effect when called directly from
the command prompt.
See the vignette in vignette('box', 'box') for more information on
displaying help for modules.