netcdf test_opaque_array.nc {
types:
  opaque(16) opaque16_t ;
dimensions:
	d2 = 2 ;
variables:
	opaque16_t vo2(d2, d2) ;

data:

 vo2 =
  0X0123456789ABCDEF0000000000000000, 0XABCDEF00000000000000000000000000,
  0XFEDCBA98765432100000000000000000, 0XFEDCBA99999999990000000000000000 ;
}