R comes with its own windowing system. You can directly type your commands in R window and run from there. While this is simple and easy for simple, uncomplicated data analytical tasks, you will need to use a text editor to type your commands and write your own programs. If you are using Linux, we recommend that you use ESS (Emacs Speaks Statistics), and WinEdt or Tinn-R if you are using Windows. Once you have gained experience, it is a good idea to run R in batch mode from a linux box or a dos console.