Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!decwrl!nsc!icldata!altos86!clp
From: clp@altos86.UUCP (Chuck L. Peterson)
Newsgroups: comp.mail.misc
Subject: /usr/spool/mail/:saved on System V
Message-ID: <1138@altos86.UUCP>
Date: 24 May 89 08:57:45 GMT
Organization: Altos, San Jose, CA
Lines: 1

Okay, I give up.  What is /usr/spool/mail/:saved used for?