Create a new group, new_group, within the
existing group /a/b in the file HDF5_file.
h5mkgrp "HDF5_file" "/a/b/new_group"
Create a new group, new_group, within the
group /a/b in the file HDF5_file.
Create the groups a and b if they do not
already exist.
Issue no error if the intervening groups or the new group already exist.
h5mkgrp -p "HDF5_file" "/a/b/new_group"
Create the new groups /a/b/new_c and
/a/x/new_4 in the file HDF5_file.
The groups /a/b and /a/x
must already exist.
h5mkgrp -p "HDF5_file" "/a/b/new_c" "/a/x/new_4"