/CURSOR_FLUSH=n

   Specify a line number which, if the cursor is positioned back
   to that line after being on a different line, the current
   screen contents will be flushed to the output file.

   This is useful for formatting screens which display data over
   the top of prior data, rather than clearing the screen before
   displaying the new data.

   The default value is zero. This means the cursor position
   is ignored.

   If specified as a negative number, this indicates that, if the
   cursor moves up that number of lines, the current screen
   contents will be flushed to the output file.

   Example:

     $ KERMIT                           ! Start program.
     Kermit-32> LOG SESSION PRICES.LOG  ! Start log file.
     Kermit-32> CONNECT TXA6:           ! Connect to modem line.
     ATDT-1-800-234-1998                ! Dial DEC's store.
     etc.
     $ PEEK /FORMAT PRICES.LOG PRICES.LIS /CURSOR_FLUSH=3

   When DEC's Electronic Store is accessed to look up prices,
   it positions to line 3, outputs a line of price information,
   then positions to line 4, etc., until the screen is full.

   When you tell it to display the next screen, it repeats this
   process. Using /CURSOR_FLUSH=3 tells the FORMAT command to
   output the prior screen before figuring out what the next
   screen will be.