The bundle functions are used to access localized string resources contained in an application bundle.
NSString *NSLocalizedString(NSString *key, NSString *comment)
NSString *NSLocalizedStringFromTable(NSString *key, NSString *tableName, NSString *comment)
NSString *NSLocalizedStringFromTableInBundle(NSString *key, NSString *tableName, NSBundle *bundle, NSString *comment)
NSString NSLocalizedStringWithDefaultValue(NSString *key, NSString *tableName, NSBundle *bundle, NSString *value, NSString *comment)