From Bug Hunting:

- correct / improve macro usage;
- (re-)add an actual description in `DESCRIPTION' section;
- synchronize argument name to `-j' option;
- improve wording;
- bump date.

usr.bin/hexdump/od.1

@@ -1,4 +1,4 @@
-.\"  $NetBSD: od.1,v 1.26 2012/04/08 22:00:38 wiz Exp $
+.\"  $NetBSD: od.1,v 1.27 2012/07/06 09:05:26 wiz Exp $
 .\"
 .\" Copyright (c) 2001 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -27,7 +27,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"/
-.Dd February 9, 2010
+.Dd June 24, 2012
 .Dt OD 1
 .Os
 .Sh NAME
@@ -48,8 +48,17 @@
 .Op Cm Bb
 .Sm on
 .Oc
-.Ar file ...
+.Op Ar
 .Sh DESCRIPTION
+The
+.Nm
+utility is a filter which displays each specified
+.Ar file ,
+or the standard input if no
+.Ar file
+arguments are specified, in a user specified
+format.
+.Pp
 The options are as follows:
 .Bl -tag -width Fl
 .It Fl A Ar base
@@ -125,22 +134,22 @@ decimal, per line.
 Display the input offset in octal, followed by eight space-separated,
 six column, space filled, two-byte units of input data, in decimal,
 per line.
-.It Fl j Ar offset
+.It Fl j Ar skip
 Skip
-.Ar offset
+.Ar skip
 bytes from the beginning of the input.
 By default,
-.Ar offset
+.Ar skip
 is interpreted as a decimal number.
 With a leading
 .Cm 0x
 or
 .Cm 0X ,
-.Ar offset
-is interpreted as a hexadecimal number,
+.Ar skip
+is interpreted as a hexadecimal number;
 otherwise, with a leading
 .Cm 0 ,
-.Ar offset
+.Ar skip
 is interpreted as an octal number.
 Appending the character
 .Cm b ,
@@ -148,7 +157,7 @@ Appending the character
 or
 .Cm m
 to
-.Ar offset
+.Ar skip
 causes it to be interpreted as a multiple of
 .Li 512 ,
 .Li 1024 ,
@@ -188,13 +197,15 @@ selects US-ASCII output, with control characters replaced with their
 names instead of as C escape sequences.
 See also the
 .Cm _u
-conversion provided by hexdump(1).
+conversion provided by
+.Xr hexdump 1 .
 .Pp
 .Cm c
 selects a standard character based conversion.
 See also the
 .Cm _c
-conversion provided by hexdump(1).
+conversion provided by
+.Xr hexdump 1 .
 .Pp
 .Cm f
 selects the floating point output format.
@@ -210,7 +221,8 @@ to specify eight byte floating point output.
 The default output format is eight byte floats.
 See also the
 .Cm e
-conversion provided by hexdump(1).
+conversion provided by
+.Xr hexdump 1 .
 .Pp
 .Cm d ,
 .Cm o ,
@@ -250,7 +262,8 @@ See also the
 .Cm u ,
 and
 .Cm x
-conversions provided by hexdump(1).
+conversions provided by
+.Xr hexdump 1 .
 .\"(a|c|f[FLD]?|[doux][C1S2I4L8]?)*
 .It Fl v
 The
@@ -263,7 +276,8 @@ Without the
 option, any number of groups of output lines, which would be
 identical to the immediately preceding group of output lines (except
 for the input offsets), are replaced with a line comprised of a
-single asterisk.
+single asterisk
+.Pq Sq \&* .
 .It Fl X
 Same as
 .Fl H .
@@ -280,18 +294,19 @@ If no options are specified, the
 default display is equivalent to specifying the
 .Fl o
 option.
-.Pp
-.Nm
-exits 0 on success and \*[Gt]0 if an error occurred.
+.Sh EXIT STATUS
+.Ex -std
 .Sh SEE ALSO
 .Xr hexdump 1 ,
 .Xr strings 1
 .Sh HISTORY
-A
+An
 .Nm
-command appears in
+command appeared in
 .At v1 .
 .Pp
-This man page was written in February 2001 by Andrew Brown, shortly
-after he augmented the deprecated od syntax to include things he felt
+This man page was initially written in February 2001 by Andrew Brown, shortly
+after he augmented the deprecated
+.Nm
+syntax to include things he felt
 had been missing for a long time.