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README.md

@@ -10,6 +10,8 @@ In this example implementation of a [ring oscillator](https://pub.pages.cba.mit.
 .wrap
 ```
 
+Where `pins` is a meta keyword, with a different meaning in the first and second operand (output VS input, respectively).
+
 ## Results
 
 | CPU Freq | Ring Freq  |