From: utzoo!decvax!cca!mark.umcp-cs@Udel-Relay@sri-unix
Newsgroups: net.unix-wizards
Title: Unix System 5.
Article-I.D.: sri-unix.4852
Posted: Thu Dec 16 05:38:30 1982
Received: Sun Dec 19 10:45:43 1982

From:     Mark Weiser <mark.umcp-cs@Udel-Relay>
Date:     10 Dec 82 22:18:45 EST  (Fri)
System 5 is the current Bell Labs internal version.  Therefore, if
you have system 5 you are as advanced as anyone in the labs (except
the pure research branch, where they run Berkeley 4.1bsd).