From mboxrd@z Thu Jan  1 00:00:00 1970
From: jnc@mercury.lcs.mit.edu (Noel Chiappa)
Date: Tue,  4 Apr 2017 16:04:42 -0400 (EDT)
Subject: [TUHS] How did you ...
Message-ID: <20170404200442.D817718C0C5@mercury.lcs.mit.edu>

    > From: Doug McIlroy

    >> [cpp] only became a separate program later than [v6]

    > It came into the manual in v8.

Separate program in the V7 distro, though:

  http://minnie.tuhs.org/cgi-bin/utree.pl?file=V7/usr/src/cmd/cpp

    Noel