1 files changed, 9 insertions, 2 deletions

diff --git a/doc/ping903.8 b/doc/ping903.8
index bde1f51..9349fca 100644
--- a/doc/ping903.8
+++ b/doc/ping903.8
@@ -13,7 +13,7 @@
 .\"
 .\" You should have received a copy of the GNU General Public License
 .\" along with Ping903.  If not, see <http://www.gnu.org/licenses/>.
-.TH PING903 8 "March 10, 2020" "PING903" "System Administration"
+.TH PING903 8 "March 11, 2020" "PING903" "System Administration"
 .SH NAME
 ping903 \- high-performance ICMP monitoring daemon
 .SH SYNOPSIS
@@ -139,7 +139,14 @@ Don't start supervisor process.
 Print program version, copyright information, and exit.
 .TP
 .B \-v
-Turn on additional logging.
+Turn on additional logging.  This option can be given several times to
+request more verbose output.  If given single \fB\-v\fR option, the
+program prints at the end of each probe the total number of echo
+requests sent and replies received.  Two options (\fB\-vv\fR), enable
+additional diagnostics of invalid echo replies.  Three options enable
+logging of each received echo reply, and four options enable verbose
+logging of each echo request sent.  Notice that three or more
+\fB\-v\fR options can produce huge amount of logs.
 .SH BUGS
 Only IPv4 is currently supported.
 .SH SEE ALSO