├── BOOKSHELF 1: My wonderful shelf of notes
│   └── BOOK 39: My lovely book in my notes
│       ├── PAGE 2745: A page within the book
│       ├── CHAPTER 643: A lone chapter
│       └── CHAPTER 644: My chapter with page
│           └── PAGE 47830: My new great page
├── BOOK 239: Scratch notes
│   ├── PAGE 47870: Note A
│   └── PAGE 47872: Note B