about the versions of \fBNFS\fR that have non-zero counts.
.TP
.B \-3
-Print only NFS v3 statistics.
+Print only NFS v3 statistics. The default is to only print information
+about the versions of \fBNFS\fR that have non-zero counts.
.TP
.B \-4
-Print only NFS v4 statistics.
+Print only NFS v4 statistics. The default is to only print information
+about the versions of \fBNFS\fR that have non-zero counts.
.TP
.B \-m, \-\-mounts
Print information about each of the mounted \fBNFS\fR file systems.
.B \-v, \-\-verbose
This is equivalent to \fB\-o all\fR.
.TP
+.B \-l, \-\-list
+Print information in list form.
+.TP
.BI "\-S, \-\-since " file
Instead of printing current statistics,
.B nfsstat
.I file
are treated as zeroes.
.TP
-.B \-Z, \-\-sleep
+.B \-Z[interval], \-\-sleep=[interval]
Instead of printing current statistics and immediately exiting,
.B nfsstat
takes a snapshot of the current statistics and pauses until it receives
.BR Ctrl-C ),
at which point it takes another snapshot and displays the difference
between the two.
+If \fIinterval\fR is specified,
+.B nfsstat
+will print the number of \fBNFS\fR calls made since the previous report.
+Stats will be printed repeatedly every \fIinterval\fR seconds.
.\" --------------------- EXAMPLES -------------------------------
.SH EXAMPLES
.TP