This is a list of all user interface routines:
PIO file Operations
PIO startup and shutdown routines
PIO decomposition routines
Reading and Writing distributed variables
Utility routines
NetCDF format specific routines
Also see: http://www.unidata.ucar.edu/software/netcdf/docs/
Reading/Writing netcdf metadata
Netcdf utility routines
NetCDF file inquiry routines