Let me make sure I understand. Currently, we rely on the existing pnetcdf library to read/write CDF 5 files. You have, in effect, modified our existing netcdf-3 code to support the CDF 5 format. Am I correct? =Dennis Heimbigner Unidata Ticket Details =================== Ticket ID: EXY-936604 Department: Support netCDF Priority: Normal Status: Closed