The notebook
All the writing.
Small discoveries, useful experiments and the occasional longer thought.
A useful question is a good place to start
A layout example for a longer note, with an illustration and room to follow a thought.
There is room for small experiments
A shorter example note. One question, a little context, and a useful place to stop.
Keeping a note for the next person
An example of a practical note that could grow into a guide over time.