Valid options are:
 -h     -v       (short versions)
--help --version (long versions)

-h, --help:    1. How to access the hints window 2. List of arguments
-v, --version: Showing version information

The short versions can be combined as -hv or -vh.
Short and long versions can be mixed, e.g. -h --version or -v --help.

A file path such as '~/.config/openbox/menu.xml' can be passed as an argument.

Only two arguments at a time are accepted. When using a file path as an 
argument, no additional argument is accepted.
