Use the File menu to open, include, and save a file.
  Also use the File menu to exit the Screen Editor.

  The File menu contains the following menu items:

      Open Benchmark...
      Open Result...
      Open Mask...
      Save Mask
      Save Mask As...
      Quit
      Exit

  For information about using a File menu item, double
  click on an item from the list of additional topics
  below.