### 20.5.1.1 File menu

New window
  create a new editing window
Open...
  open an existing file
Open module...
  open an existing module (searches sys.path)
Class browser
  show classes and methods in current file
Path browser
  show sys.path directories, modules, classes and methods

Save
  save current window to the associated file (unsaved windows have a * before and after the window title)

Save As...
  save current window to new file, which becomes the associated file
Save Copy As...
  save current window to different file without changing the associated file

Close
  close current window (asks to save if unsaved)
Exit
  close all windows and quit IDLE (asks to save if unsaved)