--- src/share/man/man7/release.7	2006/04/28 20:16:26	1.7
+++ src/share/man/man7/release.7	2006/07/26 20:18:54	1.8
@@ -31,7 +31,7 @@
 .\" $FreeBSD: src/share/man/man7/release.7,v 1.3.2.6 2003/04/12 20:42:30 murray Exp $
 .\" $DragonFly$
 .\"
-.Dd March 10, 2006
+.Dd July 26, 2006
 .Dt RELEASE 7
 .Os
 .Sh NAME
@@ -112,6 +112,14 @@ out if a number of external packages to
 your system.
 If they cannot be found, the release process will stop and give
 proper commands for downloading and setting up these packages.
+.Sh ENVIRONMENT
+.Bl -tag -width ".Va WITHOUT_SRCS"
+.It Va WITHOUT_SRCS
+If set, this variable will prevent kernel source code from being copied
+to
+.Pa /usr/src-sys.tar.bz2
+on the ISO image.
+.El
 .Sh FILES
 .Bl -tag -compact
 .It Pa /etc/make.conf