diff --git a/lib/libc/net/if_indextoname.3 b/lib/libc/net/if_indextoname.3
index c6c1a0e887d0..14ed3d0e916b 100644
--- a/lib/libc/net/if_indextoname.3
+++ b/lib/libc/net/if_indextoname.3
@@ -30,7 +30,7 @@
 .\" SUCH DAMAGE.
 .\"
 .\"     From: @(#)rcmd.3	8.1 (Berkeley) 6/4/93
-.\"	$Id: if_indextoname.3,v 1.2 1999/07/03 13:58:31 kleink Exp $
+.\"	KAME Id: if_indextoname.3,v 1.4 1999/12/10 04:07:00 itojun Exp
 .\"
 .Dd May 21, 1998
 .Dt IF_NAMETOINDEX 3
@@ -57,17 +57,23 @@
 The functions map interface index to readable interface name
 .Po
 such as
-.Li ``lo0''
+.Dq Li lo0
 .Pc
 , and vice versa.
 .Pp
+The
 .Fn if_nametoindex
-converts readable interface name to interface index
-.Pp positive integer value .
+function
+converts an interface name specified by the
+.Fa ifname
+argument to an interface index
+.Pq positive integer value .
 If the specified interface does not exist, 0 will be returned.
 .Pp
 .Fn if_indextoname
-converts interface index to readable interface name.
+converts an interface index specified by the
+.Fa ifindex
+argument to an interface name.
 The
 .Fa ifname
 argument must point to a buffer of at least
@@ -77,7 +83,7 @@ returned.
 .Po
 .Dv IF_NAMESIZE
 is also defined in
-.Li <net/if.h>
+.Aq Li net/if.h
 and its value includes a terminating null byte at the end of the
 interface name.
 .Pc
@@ -92,7 +98,7 @@ returns an array of
 structures.
 .Fa if_nametoindex
 is also defined in
-.Li <net/if.h> ,
+.Aq Li net/if.h ,
 and is as follows:
 .Bd -literal -offset
 struct if_nameindex {
@@ -135,10 +141,18 @@ return
 .Dv NULL
 on errors.
 .Sh SEE ALSO
-R. Gilligan, S.  Thomson, J. Bound, and W. Stevens,
-``Basic Socket Interface Extensions for IPv6,'' RFC2553, March 1999.
+.Rs
+.%A R. Gilligan
+.%A S. Thomson
+.%A J. Bound
+.%A W. Stevens
+.%T Basic Socket Interface Extensions for IPv6
+.%R RFC2553
+.%D March 1999
+.Re
 .Sh HISTORY
 The implementation first appeared in WIDE Hydrangea IPv6 protocol stack kit.
 .Sh STANDARDS
-These functions are defined in ``Basic Socket Interface Extensions for IPv6''
+These functions are defined in
+.Dq Basic Socket Interface Extensions for IPv6
 .Pq RFC2533 .