diff --git a/README.md b/README.md
index 4171230..f2c86d1 100644
--- a/README.md
+++ b/README.md
@@ -5,14 +5,20 @@ n2k-signalk
 [![Build Status](https://travis-ci.org/SignalK/n2k-signalk.svg?branch=master)](https://travis-ci.org/SignalK/n2k-signalk)
 
 
-NMEA 2000 to Signal K (signalk.github.io) converter. Converts [Canboat analyzer](https://github.com/canboat/canboat/wiki/analyzer) JSON output to [SignalK](http://signalk.github.io/) JSON.
+NMEA 2000 to Signal K converter. Converts [Canboat analyzer](https://github.com/canboat/canboat/wiki/analyzer) JSON output to the [Signal K](http://signalk.github.io/) data format (also JSON).
 
-For mapping NMEA 0183 data to SignalK see [nmea0183-signalk](https://github.com/SignalK/nmea0183-signalk).
+This package is part of [signalk-server](https://github.com/SignalK/signalk-server). Not a plugin. It can also be used outside of signalk-server. See Usage section below.
+
+For mapping NMEA 0183 data to the Signal K data format, see [nmea0183-signalk](https://github.com/SignalK/nmea0183-signalk).
 
 
 USAGE
 -------------
 
+**Usage in signalk-server**
+
+All data connections in signalk-server that are configured as type NMEA 2000 use this code.
+
 **Usage from command line**