# Fundamentals

- [Collections](/fundamentals/collections.md)
- [Notes](/fundamentals/notes.md)
- [Bi-Directional Linking](/fundamentals/bi-directional-linking.md)
- [Workflow states](/fundamentals/workflow-states.md)
- [Note Stack](/fundamentals/note-stack.md)
- [Pinned Notes](/fundamentals/pinned-notes.md)
- [Focus Mode](/fundamentals/focus-mode.md)
- [Import and Export](/fundamentals/import-and-export.md)
- [Where Notes Are Stored](/fundamentals/where-notes-are-stored.md)