Yeah, that looks like the ideal behavior for me too.
So the suggestion is about adding a new behavior to $read:
whenever $read starts looking for something from the beginning of the file (using the r/s/w switches with or without a line number N, or just the line number N), $read will now doing the search 'backward', starting from the end of the file.
The N parameter is also affected by the behavior, the line number N is relative from the end of the file.
