Opensource.com - https://opensource.com/article/18/1/creating-outlines-treeline
As someone who’s been known to string a few words together, I know that a well-crafted outline can be a key part of any writing project. Why? A good outline helps you organize your work. It provides a structure for what you’re writing as well as a roadmap from beginning to end.
Outlines aren’t just for writing, either. They can be a great tool for organizing just about any kind of project.