> ## Documentation Index
> Fetch the complete documentation index at: https://productbrain.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Zen Shell map

> Spine, Main, Rail — six thinking modes and URLs.

<Warning>
  **Early access** — UI may differ by account. Roadmap uses `/timeline`. [**Join the Product Brain Community**](https://community.productbrain.io).
</Warning>

Three zones: **Spine** (where you are), **Main** (the work), **Rail** (entry context). Six pill modes — Bridge, Strategy, Roadmap (`/timeline`), Execution, Review, Brain (`/chat`). Import (`/import`) and Chain (`/chain`) are access patterns, not pill modes.

Screenshots: **coming soon**.