Or maybe "Specifying multiple -v options increases the verbosity".
Index: src/usr.sbin/httpd/httpd.8 =================================================================== RCS file: /cvs/src/usr.sbin/httpd/httpd.8,v retrieving revision 1.51 diff -u -p -u -r1.51 httpd.8 --- src/usr.sbin/httpd/httpd.826 Mar 2015 19:16:57 -00001.51 +++ src/usr.sbin/httpd/httpd.810 Jun 2016 08:34:52 -0000 @@ -65,7 +65,7 @@ Check that the configuration is valid, b Verbose mode. Multiple .Fl v -options increases the verbosity. +options increase the verbosity. .El .Sh FILES .Bl -tag -width "/etc/ssl/private/server.key" -compact
