CodingGuidelines.md

@@ -24,6 +24,20 @@ The copyright should be attributed to “Dynare Team”, and the license should
 
 Abundantly comment your code (unless it is self-explanatory).
 
+## Documentation
+
+Whenever relevant, for example an option or command is added or its behaviour is modified, the reference manual should be updated.
+
+Whenever a new feature is added, the [new features page](NewFeatures) should be updated.
+
+Whenever a bug is fixed, that is present in the stable branch, the [known bugs page](Known-bugs-present-in-the-current-stable-version) should be updated, and the bugfix should be backported to the stable branch.
+
+## Testing
+
+As much as possible, integration and unit tests should be added. See
+[CONTRIBUTING.md](https://git.dynare.org/Dynare/dynare/-/blob/master/CONTRIBUTING.md)
+for more details.
+
 # MATLAB/Octave code
 
 ## Indentation