--help option should output brief documentation
for how to invoke the program, on standard output, then exit
successfully. Other options and arguments should be ignored once this
is seen, and the program should not perform its normal function.
Near the end of the ‘--help’ option’s output, please place lines
giving the email address for bug reports, the package’s home page
https://www.gnu.org/software/pkg’, and the
general page for help using GNU programs. The format should be like this:
Report bugs to: mailing-address pkg home page: <https://www.gnu.org/software/pkg/> General help using GNU software: <https://www.gnu.org/gethelp/>
It is ok to mention other appropriate mailing lists and web pages.