---
title: Shared concepts
description: Reusable design fields and behavior shared by blocks across multiple editors.
---

Field-level catalog tables below stay in English — they match the machine design schema used by the editor, API, and MCP.

- [Decoration & visibility (BlockShell)](/en/design/shared-concepts/block-shell)
- [Rich text](/en/design/shared-concepts/rich-text)
- [Icons](/en/design/shared-concepts/icons)
- [Field options](/en/design/shared-concepts/options)