Example Sketch Pull Request Notes

I’m reading through the Ardupilot script starting with the examples as suggested on the developer guide. Site listed below.


I noticed at the bottom it says…

“As you read through the example sketches and explore how they work add some comments to the code to explain the APIs and then submit a pull request so others can benefit from your study.”

Does anyone know where I can find these pull request notes? I’ve never gone this deep into a code before, and would like to reference others to help keep me grounded.