The proper order of the ``introductory'' macros in a man page is .Dd/.Dt/.Os.

Out of the approximately 1450 man pages, only about 90 of them were wrong.
Thanks to kwesterback@home.com for coming up with a script and patch to repair
this. The patch also inserted a .Os macro in the few man pages that were
missing one.

src/lib/libc/hash/rmd160.3

@@ -1,4 +1,4 @@
-.\"	$OpenBSD: rmd160.3,v 1.8 1999/05/25 21:16:24 aaron Exp $
+.\"	$OpenBSD: rmd160.3,v 1.9 1999/07/07 10:50:04 aaron Exp $
 .\"
 .\" Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
 .\" All rights reserved.
@@ -30,6 +30,7 @@
 .\"
 .Dd July 16, 1997
 .Dt RMD160 3
+.Os
 .Sh NAME
 .Nm RMD160Init ,
 .Nm RMD160Update ,

src/lib/libc/hash/sha1.3

@@ -1,4 +1,4 @@
-.\"	$OpenBSD: sha1.3,v 1.13 1999/05/25 21:16:25 aaron Exp $
+.\"	$OpenBSD: sha1.3,v 1.14 1999/07/07 10:50:04 aaron Exp $
 .\"
 .\" Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
 .\" All rights reserved.
@@ -29,6 +29,7 @@
 .\"
 .Dd July 10, 1997
 .Dt SHA1 3
+.Os
 .Sh NAME
 .Nm SHA1Init ,
 .Nm SHA1Update ,

src/lib/libutil/opendev.3

@@ -1,4 +1,4 @@
-.\"	$OpenBSD: opendev.3,v 1.7 1999/07/02 21:13:07 aaron Exp $
+.\"	$OpenBSD: opendev.3,v 1.8 1999/07/07 10:50:06 aaron Exp $
 .\"
 .\" Copyright (c) 1996, Jason Downs.  All rights reserved.
 .\"
@@ -25,7 +25,7 @@
 .\"
 .Dd June 17, 1996
 .Dt OPENDEV 3
-.Os OpenBSD
+.Os
 .Sh NAME
 .Nm opendev
 .Nd short form device open routine

src/lib/libutil/uucplock.3

@@ -21,11 +21,11 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\" 
-.\" $Id: uucplock.3,v 1.3 1999/06/05 04:16:08 aaron Exp $
+.\" $Id: uucplock.3,v 1.4 1999/07/07 10:50:06 aaron Exp $
 .\" "
 .Dd March 30, 1997
-.Os
 .Dt uucplock 3
+.Os
 .Sh NAME
 .Nm uu_lock , 
 .Nm uu_unlock ,