Слово using (синтаксис C#)

using (PrintDialog pd = new PrintDialog())
            {
                pd.ShowDialog();
 
                ProcessStartInfo info = new ProcessStartInfo(@"D:\documents\filetoprint.doc");
 
                info.Verb = "PrintTo";
                info.Arguments = pd.PrinterSettings.PrinterName;
 
                info.CreateNoWindow = true;
 
                info.WindowStyle = ProcessWindowStyle.Hidden;
 
                Process.Start(info);