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.
invgeod -V (return code: 1)
Rel. 4.9.2, 08 September 2015
<invgeod>:
invalid option: --
program abnormally terminated
invgeod (return code: 0)
Rel. 4.9.2, 08 September 2015
usage: invgeod [ -afFIptTwW [args] ] [ +opts[=arg] ] [ files ]