$ PEEK/SAVE_SCREEN /CLOSE_FILE

   The /CLOSE_FILE qualifier closes any existing log file turned on with
   PEEK/SAVE_SCREEN/LOG, without interrupting the ongoing screen-saving.

   This means a watcher will still be able to get an initial full-screen
   display when starting to watch the terminal. Only any on-going
   terminal-logging is ended with SAVE_SCREEN/CLOSE_FILE.

   Example: PEEK> SAVE_SCREEN/CLOSE_FILE    ! Close current log file.