Other actions do not dive into this gory descriptions, but we do.

config/action.d/cloudflare.conf

@@ -52,7 +52,8 @@ actionunban = curl -s -o /dev/null https://www.cloudflare.com/api_json.html -d '
 
 [Init]
 
-# This action needs to be set up in jail.local or in jail.d/somefile.conf
+# If you like to use this action with mailing whois lines, you could use the composite action
+# action_cf_mwl predefined in jail.conf, just define in your jail:
 #
 # action = %(action_cf_mwl)s
 # # Your CF account e-mail