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

# Blueprint hub & cards

> The card-based hubs: Strategy, External research and Development.

Strategy, External research and Development hubs all work the same way. They hold **cards** — structured documents the agent drafts and you edit.

## Creating cards

Press **Create card**, pick a type, and the agent drafts it from your strategy's context. You can also start from a blank card and write it yourself. See [Generate your first blueprint](/getting-started/generate-your-first-blueprint).

## Editing

Cards open in a full editor. Headings, lists, tables, links and images all work. Edits save as you type.

## Linking cards

Cards can reference other cards and roadmap items. Linked cards give the agent a consistent picture when it drafts the next one.

## Hiding cards from viewers

Any card can be hidden from viewers while you work on it. Editors still see it. Useful for drafts you're not ready to defend.