--- src/gnu/usr.bin/rcs/rcs/rcsfile.5	2003/06/17 04:25:47	1.2
+++ src/gnu/usr.bin/rcs/rcs/rcsfile.5	2007/01/17 17:56:23	1.3
@@ -6,7 +6,7 @@
 .ds Dt \\$4
 ..
 .Id $FreeBSD: src/gnu/usr.bin/rcs/rcs/rcsfile.5,v 1.5.2.1 2001/07/22 11:01:34 dd Exp $
-.Id $DragonFly: src/gnu/usr.bin/rcs/rcs/rcsfile.5,v 1.1 2003/06/16 04:13:05 dillon Exp $
+.Id $DragonFly$
 .ds r \s-1RCS\s0
 .if n .ds - \%--
 .if t .ds - \(em
@@ -70,6 +70,7 @@ nonterminal symbols are in
 		\f3state\fP	{\f2id\fP}\f3;\fP
 		\f3branches\fP	{\f2num\fP}*\f3;\fP
 		\f3next\fP	{\f2num\fP}\f3;\fP
+		{ \f3commitid\fP \f2id\fP\f3;\fP }
 		{ \f2newphrase\fP }*
 .LP
 \f2desc\fP	::=	\f3desc\fP	\f2string\fP
@@ -129,6 +130,18 @@ and all the digits of years thereafter.
 Dates use the Gregorian calendar; times use UTC.
 .PP
 The
+.I commitid
+is followed by an
+.I id
+token. This token is intended to be unique across
+multiple files and is used to help group files as
+being a part of the same logical commit.
+This token must uniquely identify the commit
+operation that was applied to a set of RCS files.
+In particular, it must be unique among all the
+commitids in this file.
+.PP
+The
 .I newphrase
 productions in the grammar are reserved for future extensions
 to the format of \*r files.