> For the complete documentation index, see [llms.txt](https://docs.rainbird.ai/rainbird/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rainbird.ai/rainbird/knowledge-modelling/modelling-features/other-features/undo-and-redo.md).

# Undo and Redo

Reverse and reapply editor changes in your current session.

## Overview

Undo and redo lets you reverse and reapply changes while editing your knowledge map.

This makes it safer to experiment with Co-author or when manually editing, as you can step back accidental changes without manually rebuilding anything.

## Undo a change

Click **Undo** in the editor toolbar.

Each click reverses one change.

## Redo a change

Click **Redo** in the editor toolbar.

Redo reapplies the last change you undid.

A brief notification confirms each action. For example, `Undone: Add relationship`.

## What undo and redo covers

Undo and redo covers changes to the **core logic** of your draft knowledge map.

Each action is one undo step. A rule update with 20 new conditions is still one step.

You can undo and redo changes to:

* **Concepts**: add, update, or delete
* **Concept instances**: add, update, reorder, or delete
* **Relationships**: add, update, or delete
* **Rules**: add, update, reorder, or delete
* **Facts**: add, update, or delete
* **Datasources**: add, update, or delete
* **RBLang**: manual edits
* **Co-author changes**: updates made by Co-author

## What undo and redo does not cover

Some actions sit outside the core map logic.

You cannot undo or redo:

* **Graph layout changes**
* **README updates**
* **Importing a map**
* **Restoring a version**
* **Map-level settings**: such as map name and data retention
* **Anything outside the editor**: queries, automated tests, agents, and publishing

{% hint style="info" %}
Undo and redo is useful for quick recovery. [Versioning](/rainbird/knowledge-modelling/versioning.md) is still the safer fallback before large structural changes, imports, or restores.
{% endhint %}


---

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