netcdf test_unlim {
dimensions:
	lon = 2 ;
	time = UNLIMITED ; // (0 currently)
	lat = 3 ;
variables:
	float lon(lon) ;
		string lon:units = "degrees_east" ;
	double time(time) ;
		time:_ChunkSizes = 512U ;
		string time:units = "seconds since 2009-01-01" ;
	float lat(lat) ;
		string lat:units = "degrees_north" ;
	float pr(time, lat, lon) ;
		pr:_ChunkSizes = 1U, 3U, 2U ;
		string pr:standard_name = "air_pressure_at_sea_level" ;
		string pr:units = "hPa" ;
		string pr:_edu.ucar.maps = "/time", "/lat", "/lon" ;

// global attributes:
		string :title = "example for workshop" ;
}