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+# How to contribute
+
+Third-party patches are essential for keeping Paparazzi great.
+We want to keep it as easy as possible to contribute changes that
+get things working in your use-case. There are a few guidelines that we
+need contributors to follow so that we can have a chance of keeping on
+top of things.
+
+## Getting Started
+
+* Make sure you have a [GitHub account](https://github.com/signup/free)
+* Submit a ticket for your issue, assuming one does not already exist.
+  * Clearly describe the issue including steps to reproduce when it is a bug.
+  * Make sure you fill in the earliest version that you know has the issue.
+* Fork the repository on GitHub
+
+## Making Changes
+
+* Create a topic branch from where you want to base your work.
+  * This is usually the master branch.
+  * Only target release branches if you are certain your fix must be on that
+    branch.
+  * To quickly create a topic branch based on master; `git branch
+    my_contribution master` then checkout the new branch with `git
+    checkout my_contribution`.  Please avoid working directly on the
+    `master` branch.
+* Make commits of logical units.
+* Check for unnecessary whitespace with `git diff --check` before committing.
+
+## Style
+
+* C/C++ code: Two spaces, no tabs
+* Use [Doxygen](http://www.doxygen.org) comments
+* Python: Four spaces, no tabs, see [PEP8](http://www.python.org/dev/peps/pep-0008)
+* No trailing whitespace. Blank lines should not have any space.
+
+## Submitting Changes
+
+* Push your changes to a topic branch in your fork of the repository.
+* Submit a pull request to the repository in the paparazzi organization.
+
+# Additional Resources
+
+* [More information on contributing](http://paparazzi.enac.fr/wiki/Contributing)
+* [Coding style guidelines](http://paparazzi.github.io/docs/latest/styleguide.html)
+* [Issue tracker](https://github.com/paparazzi/paparazzi/issues)
+* [General GitHub documentation](http://help.github.com/)
+* [GitHub pull request documentation](http://help.github.com/send-pull-requests/)
+* #paparazzi-devel IRC channel on freenode.org