> Hmm, ACL is nothing _new_ - I used ACL's on AIX over 10 years ago and
> I'm sure ACL wasn't a new thing even then.

Indeed.  Fully general access control lists go back to Multics or
earlier and as best as I know predate the user/group/owner concept
used by unix; U/G/O permissions are best viewed as an oversimplified
access control list.

					- Bill