[src/trunk]: src/usr.bin/nl Improve description.

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

details:   https://anonhg.NetBSD.org/src/rev/4f45b42eeb99
branches:  trunk
changeset: 790189:4f45b42eeb99
user:      wiz <wiz%NetBSD.org@localhost>
date:      Tue Sep 24 22:08:06 2013 +0000

description:
Improve description.
>From J?r?mie Courr?ges-Anglas <jca%wxcvbn.org@localhost>.

diffstat:

 usr.bin/nl/nl.1 |  14 +++++++++-----
 1 files changed, 9 insertions(+), 5 deletions(-)

diffs (30 lines):

diff -r dcdd63ebff48 -r 4f45b42eeb99 usr.bin/nl/nl.1
--- a/usr.bin/nl/nl.1   Tue Sep 24 18:23:07 2013 +0000
+++ b/usr.bin/nl/nl.1   Tue Sep 24 22:08:06 2013 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: nl.1,v 1.15 2013/09/12 07:26:13 wiz Exp $
+.\"    $NetBSD: nl.1,v 1.16 2013/09/24 22:08:06 wiz Exp $
 .\"
 .\" Copyright (c) 1999 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -51,12 +51,16 @@
 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