I’ve always used visuals to code, so this feature is personal. For example, here’s my Codea notepad as it currently lives in my iPad

They scroll with your code and live with your project. When you share your project, you’re sharing a sketchbook of ideas as well as code

We have just released Codea 3.13. It has a new feature we’re calling Code Notes

Code Notes lets you use your Apple Pencil to write, scribble or draw on your code. Make your intentions clear, or obscure them completely