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Hello there I have another couple of suggestion to make: When I use ncgen -c, a c-source is created, that, compiled, generates the binary netcdf-file. I think it would be nice, if this c-program would give the generated file the name plus extension ".nc", since this is the standard extension for netcdf. ( the reason why I'm interested in this is, that the following happened to me: starting off with a cdl-file example_1.cdl, I call ncgen -c >example_1.c. Then, I compile this file and give it the name example_1. When I run example_1 the generated file destroys the example_1-executable, of course. But it took me a while to find this out. :-) ) The other suggestion is, when I call ncdump -f plane2x3.nc I get the error message *** ../bin/ncdump: invalid value for -b option: plane2x3.nc ^ | which should be *** ../bin/ncdump: invalid value for -f option: plane2x3.nc ^ | Thanks Bernhard