16.4 Define versus Data Mode
NetCDF-4 doesn't require distinguishing between calls that are
restricted to "define mode" or "data mode".
- For classic and 64-bit offset files, define and
data mode are explicitly managed by the user, with nc_redef and
- For netCDF-4 files, data and define mode
can be left to netCDF-4. The mode will be
switched as needed.
- So calls to nc_enddef and nc_redef can be removed.
- This automatic mode switching is turned off for
files created with CLASSIC_MODEL flag.