Netcdf-IO for PDL

 PDL::NetCDF provides the PDL interface to the Unidata NetCDF library.
 It uses the netCDF version 3 library to make a subset of netCDF functionality
 available to PDL users in a clean, object-oriented interface.
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 The NetCDF standard allows N-dimensional binary data to be efficiently
 stored, annotated and exchanged between many platforms.
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 When one creates a new netCDF object, this object is associated with one
 netCDF file.