When you use $read with the "w, r or s" switches to scan the file, scanning starts from the beginning of the file, not the end. I think he wants to scan the other way round. If that's not what he meant, then this feature suggestion doesn't make much sense imo, as you can just loop backwards as you point out.
Btw in your while condition, you should put while ($read(file,%x) != $null) because that loop would stop once the $read evalutes to a zero, an empty line, or $false. But anyway, I wouldn't loop through a text file, that's a bad idea (continuous disk access) but rather loadbuf it into a hidden window, atleast then it's buffered in memory.
