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.
idlj --version (return code: 0)
java.io.FileNotFoundException: --version (No such file or directory)
idlj --help (return code: 0)
java.io.FileNotFoundException: --help (No such file or directory)