diff --git a/contrib/amd/amd/amd.8 b/contrib/amd/amd/amd.8
index 32ffb2c6d293..f09fea9350df 100644
--- a/contrib/amd/amd/amd.8
+++ b/contrib/amd/amd/amd.8
@@ -38,7 +38,7 @@
 .\"
 .\"	%W% (Berkeley) %G%
 .\"
-.\" $Id: amd.8,v 1.2 1999/01/10 21:53:40 ezk Exp $
+.\" $Id: amd.8,v 1.3 1999/09/30 21:01:29 ezk Exp $
 .\" $FreeBSD$
 .\"
 .Dd April 19, 1994
@@ -60,7 +60,7 @@
 .Ek
 .Op Fl l Ar logfile
 .Op Fl o Ar op_sys_ver
-.Op Fl t Ar interval.interval
+.Op Fl t Ar timeout.retransmit
 .Bk -words
 .Op Fl w Ar interval
 .Ek
@@ -175,13 +175,21 @@ been auto-mounted,
 .Nm amd
 .Em inherits
 it.
-.It Fl t Ar interval.interval
-Specify the
+.It Fl t Ar timeout.retransmit
+Specify the NFS timeout
 .Ar interval ,
 in tenths of a second, between
-.Tn NFS/RPC/UDP
-retries.  The default is 0.8 seconds.  The second values alters the retransmit
-counter.  Useful defaults are supplied if either or both values are missing.
+.Tn NFS/RPC
+retries (for UDP only).  The default
+is 0.8 seconds.  The second value alters the restransmit counter, which
+defaults to 11 retransmissions.  Both of these values are used by the kernel
+to communicate with amd.  Useful defaults are supplied if either or both
+values are missing.
+.Pp
+Amd relies on the kernel RPC retransmit mechanism to trigger mount retries.
+The values of these parameters change the overall retry interval.  Too long
+an interval gives poor interactive response; too short an interval causes
+excessive retries.
 .It Fl v
 Version.  Displays version and configuration information on standard error.
 .It Fl w Ar interval