Różnica w standaloneMonthSymbols i monthSymbols

#import <Foundation/Foundation.h>

int main (int argc, const char * argv[])
{

    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];


    NSLocale *plLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"pl_PL"];
    [dateFormatter setLocale:plLocale];

    NSLog(@"LISTA MIESIECY W standaloneMonthSymbols: %@",
          [dateFormatter standaloneMonthSymbols]);
    NSLog(@"LISTA MIESIECY W monthSymbols: %@",
          [dateFormatter monthSymbols]);


    [pool drain];
    return 0;
}