Note: help and version output are generated by a naïve script which tries a few variants of
<command> --help, <command> -h etc. to find the command's help and version info.
Sometimes it gets lucky, sometimes it doesn't; if the output below looks wrong, it probably is.
9wm -version (return code: 0)
9wm version 1.4.0, Copyright (c) 2017 multiple authors
9wm --help (return code: 1)
usage: 9wm [-version] [-cursor cursor] [-border] [-font fname] [-term prog] [-active color] [-inactive color] [exit|restart]