> For the complete documentation index, see [llms.txt](https://t2-world.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://t2-world.gitbook.io/docs/intro/what-is-t2/the-t2-fundamentals.md). # The t2 Fundamentals ## The t2 Space Odyssey t2 is a world of narratives curated by time. Here, people can freely travel to read, write, and curate content as a collaboration and social engagement. From the biggest to the smallest scales of the network, the hierarchy helps us explore with our intuition as a traveling guideļ¼š **XL: t2 World (Platform & Protocol Level)** The sum of all content, people, items, and actions on t2. \ The ultimate public goods and source code.\ \ **L: Territories (Community Level)** Territories are the permissionless article clubs on t2. \ Territories bring their shared passion and unique points of view to the world.\ \ **M: Spaces (Topic Level)** A niche topic within a territory.\ When a space becomes big enough, it might branch out to become an independent territory.\ \ **S: Content** Articles. The medium of attention, the catalyst of engagements. #### **XS: Actions (Engagements)** A piece of attention history, a comment, a note, a highlight, or a reaction.
## **Attention links them all** Attention is the ultimate scarcity that links/curates all items in the world. ### **Items on t2 include:** * An Article * A User * A Space * A Territory **In the future, items will also include:** * A Note * A Highlight * A Comment * A Proposal * A piece of Attention History