usage: h5mkgrp [OPTIONS] FILE GROUP...
   OPTIONS
      -h, --help         Print a usage message and exit
      -l, --latest       Use latest version of file format to create groups
      -p, --parents      No error if existing, make parent groups as needed
      -v, --verbose      Print information about OBJECTS and OPTIONS
      -V, --version      Print version number and exit
      --vol-value        Value (ID) of the VOL connector to use for opening the
                         HDF5 file specified
      --vol-name         Name of the VOL connector to use for opening the
                         HDF5 file specified
      --vol-info         VOL-specific info to pass to the VOL connector used for
                         opening the HDF5 file specified
                         If none of the above options are used to specify a VOL, then
                         the VOL named by HDF5_VOL_CONNECTOR (or the native VOL connector,
                         if that environment variable is unset) will be used
      --vfd-value        Value (ID) of the VFL driver to use for opening the
                         HDF5 file specified
      --vfd-name         Name of the VFL driver to use for opening the
                         HDF5 file specified
      --vfd-info         VFD-specific info to pass to the VFL driver used for
                         opening the HDF5 file specified