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+# How to contribute
+
+### Sign our Contributor License Agreement (CLA)
+
+Even for small changes, we ask that you please sign the CLA electronically
+[here](https://developers.google.com/open-source/cla/individual).
+The CLA is necessary because you own the copyright to your changes, even
+after your contribution becomes part of our codebase, so we need your permission
+to use and distribute your code. You can find more details
+[here](https://code.google.com/p/dart/wiki/Contributing).
