- Add $OpenBSD$ tags.

- null(4) xref zero(4), and vice versa.
- Some other minor mdoc cleanup.

2 files changed, 10 insertions, 5 deletions

diff --git a/share/man/man4/null.4 b/share/man/man4/null.4
index e45c98bf4d0..5cb15431a54 100644
--- a/share/man/man4/null.4
+++ b/share/man/man4/null.4
@@ -1,3 +1,4 @@
+.\"	$OpenBSD: null.4,v 1.2 2000/10/13 18:38:37 aaron Exp $
 .\"	$NetBSD: null.4,v 1.3 1994/11/30 16:22:29 jtc Exp $
 .\"
 .\" Copyright (c) 1991, 1993
@@ -42,15 +43,17 @@
 .Sh DESCRIPTION
 The
 .Nm
-device accepts and reads data as any ordinary (and willing)
-file \-
-but throws it away. The length of the
-.Nm null
+device accepts and reads data as any ordinary (and willing) file,
+but throws it away.
+The length of the
+.Nm
 device is always zero.
 .Sh FILES
 .Bl -tag -width /dev/null
 .It Pa /dev/null
 .El
+.Sh SEE ALSO
+.Xr zero 4
 .Sh HISTORY
 A
 .Nm
diff --git a/share/man/man4/zero.4 b/share/man/man4/zero.4
index 7b24f6661c7..8f932fead46 100644
--- a/share/man/man4/zero.4
+++ b/share/man/man4/zero.4
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: zero.4,v 1.1 1999/11/09 22:38:15 aaron Exp $
+.\"	$OpenBSD: zero.4,v 1.2 2000/10/13 18:38:37 aaron Exp $
 .\"
 .\" Copyright (c) 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -44,3 +44,5 @@ device provides an infinite stream of null (zero) bytes.
 .Bl -tag -width /dev/zero
 .It Pa /dev/zero
 .El
+.Sh SEE ALSO
+.Xr null 4