I personally think that just givin a brief preamble on what are the differences between "freed" and "cleared" as for "end" and "exit" would make the document very usefull.
Comment on Re^2: Mini-Tutorial: Perl's Memory Management
I agree, this would be much improved by some definitions. I read a lot of it thinking, "what is meant by 'free' here?".
I think often times when questions about memory arise, a focus of interest is on when and how memory is returned to the operating system. That's probably a distinction made in here somewhere, but it would be better if that distinction were explicit.