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@@ -4,6 +4,11 @@
 
 An Arduino library for sending and receiving data using CAN bus.
 
+## What is CAN?
+
+* https://en.wikipedia.org/wiki/CAN_bus
+
+
 ## Compatible Hardware
 
 * [Microchip MCP2515](http://www.microchip.com/wwwproducts/en/en010406) based boards/shields