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 Adds `Node-RED <https://nodered.org/>`_ and `Node-RED Dashboard <https://flows.nodered.org/node/node-red-dashboard>`_ to Internet-in-a-Box (IIAB) for educational experiments with `IoT <https://en.wikipedia.org/wiki/Internet_of_things>`_.
 
+Node-RED is a flow-based development tool for visual programming developed originally by IBM for wiring together hardware devices, APIs and online services as part of the Internet of Things.  Node-RED provides a web browser-based flow editor, which can be used to create JavaScript functions.
+
 SEE ALSO: `Mosquitto (MQTT) <../mosquitto/README.rst>`_