---
title: Overview
description: Learn the editor's declarative action model before assembling a complete editing surface.
order: 1
toc:
  - id: mental-model
    title: Mental model
  - id: tutorial-map
    title: Tutorial map
  - id: stable-capabilities
    title: Stable capabilities
---

## Mental model {#mental-model}

`@workspace/lexical` treats editor actions as declarations. Each action describes its behavior and the nodes, plugins, or embeds it requires. `LexicalRoot` collects those requirements before creating the editor.

Toolbars decide where an action appears; they do not separately register editor capabilities.

## Tutorial map {#tutorial-map}

You will create the root and content surface, choose a preset, customize action placement, define an application action, add media uploads, and finish with localized labels.

## Stable capabilities {#stable-capabilities}

Actions, nodes, and plugins are fixed when an editor instance is created. Give `LexicalRoot` a new React `key` when the application needs to replace the entire capability set.