Simplify markup, use .Nx, sort sections.

sbin/ping/ping.8

@@ -1,4 +1,4 @@
-.\"	$NetBSD: ping.8,v 1.36 2001/11/16 10:25:49 wiz Exp $
+.\"	$NetBSD: ping.8,v 1.37 2001/11/16 12:05:38 wiz Exp $
 .\"
 .\" Copyright (c) 1985, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -127,10 +127,10 @@ For the format of specification string, please refer
 Please note that this option is same as
 .Fl P
 in KAME/FreeBSD and KAME/BSDI
-.Po
+(as
 .Fl P
-was already occupied in NetBSD
-.Pc .
+was already occupied in
+.Nx ) .
 .It Fl f
 Flood ping.
 Outputs packets as fast as they come back or one hundred times per second,
@@ -439,6 +439,21 @@ Others may use completely wild values.
 .Nm
 returns 0 on success (the host is alive),
 and non-zero if the arguments are incorrect or the host is not responding.
+.Sh SEE ALSO
+.Xr netstat 1 ,
+.Xr icmp 4 ,
+.Xr inet 4 ,
+.Xr ip 4 ,
+.Xr ifconfig 8 ,
+.Xr routed 8 ,
+.Xr spray 8 ,
+.Xr traceroute 8
+.Sh HISTORY
+The
+.Nm
+command appeared in
+.Bx 4.3 .
+IPsec support was added by WIDE/KAME project.
 .Sh BUGS
 Flood pinging is not recommended in general, and flood pinging a broadcast
 or multicast address should only be done under very controlled conditions.
@@ -468,19 +483,3 @@ The maximum IP header length is too small for options like
 to
 be completely useful.
 There's not much that that can be done about this, however.
-.Pp
-.Sh SEE ALSO
-.Xr netstat 1 ,
-.Xr icmp 4 ,
-.Xr inet 4 ,
-.Xr ip 4 ,
-.Xr ifconfig 8 ,
-.Xr routed 8 ,
-.Xr traceroute 8 ,
-.Xr spray 8
-.Sh HISTORY
-The
-.Nm
-command appeared in
-.Bx 4.3 .
-IPsec support was added by WIDE/KAME project.