===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/nl/nl.1,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -r1.4 -r1.5
--- src/usr.bin/nl/nl.1	2013/09/14 14:55:57	1.4
+++ src/usr.bin/nl/nl.1	2013/11/28 20:44:43	1.5
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: nl.1,v 1.4 2013/09/14 14:55:57 jmc Exp $
+.\"	$OpenBSD: nl.1,v 1.5 2013/11/28 20:44:43 jca Exp $
 .\"	$NetBSD: nl.1,v 1.14 2013/09/09 09:02:25 wiz Exp $
 .\"
 .\" Copyright (c) 1999 The NetBSD Foundation, Inc.
@@ -28,7 +28,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: September 14 2013 $
+.Dd $Mdocdate: November 28 2013 $
 .Dt NL 1
 .Os
 .Sh NAME
@@ -52,12 +52,16 @@
 The
 .Nm
 utility reads lines from the named
-.Ar file
-or the standard input if the
-.Ar file
-argument is omitted,
+.Ar file ,
 applies a configurable line numbering filter operation,
 and writes the result to the standard output.
+If
+.Ar file
+is a single dash
+.Pq Sq \&-
+or absent,
+.Nm
+reads from the standard input.
 .Pp
 The
 .Nm