# Higher-Order Notes (LYT) - **Link Note** \- A note with a bunch of links. - **Hub Note** \- A navigational note, like an airport hub (a Luhmann term). - **Index Note** \- A note that references other notes (sometimes but not always alphabetical). - **Workbench** \- A brainstorm-y note with a links hastily assembled. - **Outline Note** \- A note for the early-stage outlining of content. - **Structure Note** \- A term that describes what it does: structures stuff. - **Structure Zettel** \- A term from zettelkasten.de - Usually shown as a linear Table of Contents, often with annotations. - **Table of Contents** \- A finalized structure that references material - **MOC (Map of Content)** \- A flexible higher-order note that serves all the above purposes of gathering, outlining, structuring, and navigating. In addition, it is an _active thinking tool_ that allows for the reshaping, connecting, and building of ideas. Here's what else an MOC can do: - MOCs can structure links in completely countless and non-linear ways. - MOCs can be a combo of links and tags and text and embeds and anything you can think of. - MOCs can be linked to other MOCs (Emergence Level 4), which eventually link to a Home note (Emergence Level 5). - And most valuable, [MOCs concentrate & accelerate idea interaction](https://publish.obsidian.md/lyt-kit/MOCs+concentrate+%26+accelerate+idea+interaction). **Source** : [What are higher-order notes?](https://publish.obsidian.md/lyt-kit/Umami/What+are+higher-order+notes)