document which bits are xsi; ok millert sobrado

diff --git a/usr.bin/hexdump/od.1 b/usr.bin/hexdump/od.1
index 6688bb8..adb81e7 100644 (file)
--- a/usr.bin/hexdump/od.1
+++ b/usr.bin/hexdump/od.1
@@ -1,4 +1,4 @@
-.\"  $OpenBSD: od.1,v 1.28 2014/04/15 18:08:58 sobrado Exp $
+.\"  $OpenBSD: od.1,v 1.29 2014/04/15 21:00:13 jmc Exp $
 .\"  $NetBSD: od.1,v 1.16 2001/12/07 01:23:42 bjh21 Exp $
 .\"
 .\" Copyright (c) 2001 The NetBSD Foundation, Inc.
@@ -312,6 +312,16 @@ utility is compliant with the
 specification.
 .Pp
 The flags
+.Op Fl bcdosx
+as well as the
+.Ar offset
+specifier are marked by
+.St -p1003.1-2008
+as being an
+X/Open System Interfaces
+option.
+.Pp
+The flags
 .Op Fl aBDeFfHhIiLlOX
 are extensions to that specification.
 .Sh HISTORY