[src/trunk]: src/games/bcd Document history.

[sevan <sevan%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/d49ed2f5c1ef
branches:  trunk
changeset: 459273:d49ed2f5c1ef
user:      sevan <sevan%NetBSD.org@localhost>
date:      Sun Sep 01 22:50:11 2019 +0000

description:
Document history.
https://www.bell-labs.com/usr/dmr/www/man11.pdf
Between v1 & v6 UNIX, bcd was rewritten in C, but I don't know if which version,
hence I've skipped mentioning it.

diffstat:

 games/bcd/bcd.6 |  11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)

diffs (29 lines):

diff -r a5bf6192eb8e -r d49ed2f5c1ef games/bcd/bcd.6
--- a/games/bcd/bcd.6   Sun Sep 01 22:10:13 2019 +0000
+++ b/games/bcd/bcd.6   Sun Sep 01 22:50:11 2019 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: bcd.6,v 1.17 2018/01/16 06:43:53 pgoyette Exp $
+.\"    $NetBSD: bcd.6,v 1.18 2019/09/01 22:50:11 sevan Exp $
 .\"
 .\" Copyright (c) 1988, 1991, 1993
 .\"    The Regents of the University of California.  All rights reserved.
@@ -29,7 +29,7 @@
 .\"
 .\"    @(#)bcd.6       8.1 (Berkeley) 5/31/93
 .\"
-.Dd January 9, 2018
+.Dd September 1, 2019
 .Dt BCD 6
 .Os
 .Sh NAME
@@ -83,3 +83,10 @@
 .%B "ITU-T Recommendation F.1: Operational provisions for the international public telegram service"
 .%O "Division B, I. Morse code"
 .Re
+.Sh HISTORY
+A
+.Nm bcd
+utility appeared in
+.At v1 .
+The current implementation originates from a rewrite included in
+.Bx 4.3 reno