diff -uwr doc.orig/knockd.1.in doc/knockd.1.in
--- doc.orig/knockd.1.in	2007-04-12 11:32:05.000000000 +0200
+++ doc/knockd.1.in	2007-04-12 11:33:02.000000000 +0200
@@ -179,8 +179,8 @@
 \fBStart_Command\fP.
 .TP
 .B "Cmd_Timeout = <timeout>"
-Time to wait between \fBStart_Command\fP and \fBStop_Command\fP.  This
-directive is optional, only required if \fBStop_Command\fP is used.
+Time to wait between \fBStart_Command\fP and \fBStop_Command\fP in seconds.
+This directive is optional, only required if \fBStop_Command\fP is used.
 .TP
 .B "Stop_Command = <command>"
 Specify the command to be executed when \fBCmd_Timeout\fP seconds have passed