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.
ipe6upgrade -V (return code: 1)
Could not open '--version'
ipe6upgrade (return code: 1)
Usage: ipe6upgrade <input.xml> [ <output.ipe> ]
Ipe6upgrade reads the XML format generated by any version of Ipe 6,
and writes the XML Format of Ipe 7.0.