diff --git a/plugins/nginx/nginx_error b/plugins/nginx/nginx_error
index 4b22081e..73f77b07 100755
--- a/plugins/nginx/nginx_error
+++ b/plugins/nginx/nginx_error
@@ -7,21 +7,27 @@
 
 nginx error - Munin plugin to monitor nginx error rates (http status codes per minute).
 
+
 =head1 APPLICABLE SYSTEMS
 
-Any Linux host, running nginx, with bash version > 4.0
+Any host running nginx, with bash version > 4.0
+
 
 =head1 CONFIGURATION
 
 This shows the default configuration of this plugin.  You can override
 the log file path and the logpattern.
+Additionally you may want to adjust 'group' (or 'user') based on the
+permissions required for reading the log file.
 
   [nginx_error]
+        group          adm
 	env.logpath    /var/log/nginx
 	env.logpattern a.*.log
 
 	Nginx must also be configured to log accesses in "combined" log format (default)
 
+
 =head1 USAGE
 
 Link this plugin to /etc/munin/plugins/ and restart the munin-node.
@@ -33,19 +39,25 @@ will parse the log file /var/log/nginx/a.mydomaincom.log
 
 You can change 'env.logpattern' using asterisk ('*') to match your logs filenames.
 
+'env.logpattern' is ignored for a non-symlink configuration.
+
+
 =head1 INTERPRETATION
 
 The plugin shows nginx http "error" status rates by parsing access log.
 
+
 =head1 MAGIC MARKERS
 
  #%# family=auto
  #%# capabilities=autoconf
 
+
 =head1 BUGS
 
 None known.
 
+
 =head1 VERSION
 
 1.1 - 2018/01/20
@@ -60,6 +72,7 @@ None known.
 
 vovansystems@gmail.com, 2013
 
+
 =head1 LICENSE
 
 GPLv3
@@ -122,7 +135,7 @@ do_config () {
   echo "graph_vlabel pages with http error codes / \${graph_period}"
   echo "graph_category webserver"
   echo "graph_period minute"
-  echo "graph_info This graph shows nginx error amount per minute"
+  echo "graph_info This graph shows nginx error rate per minute"
   for status_code in "${!http_codes[@]}"; do
     echo "error${status_code}.type DERIVE"
     echo "error${status_code}.min 0"