The dialog box provides LSE with the file you wish to use.

  The "File Filter" field allows you to specify which filed are to be
  displayed in the list boxes.  Press on the "FILTER" button to use
  your filter.

  Particular files may be entered in one of 2 ways:

                o  Enter the file name in the "Selection" field

                o  Select a file in the list box

  Press the "OK" button to provide the file name to LSE.