> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://support.keystone-software.tech/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Undo and Redo Actions

**You can easily undo or redo actions you have taken in Masterplan. On the arrow icon, you will see the number of recent actions available.**

#### **Undo**

**The system allows you to undo your last 10 actions, making it easy to backtrack and correct mistakes.**

![](https://storage.crisp.chat/users/helpdesk/website/-/7/6/b/0/76b02a159d611400/screenshot-2025-10-22-at-20221_4nbtwf.png)

**Actions that can be undone include:**
* **Creating a project, placeholder, note, or drill stop**
* **Assigning or unassigning a project**
* **Deleting a project, placeholder, note, or drill stop**
* **Updating projects, placeholders, or notes:**
    * **General tab updates**
    * **Adding or deleting risks**
    * **Adding, updating, or deleting predecessors or successors**
    * **INV tab updates**

|| **Important details:**

* **Undo applies only to your own actions, not to those made by other users.**
* **Undo is available in both Main Masterplan and Draft modes.**
* **You can undo multiple actions sequentially.**
* **Actions can only be undone within your current session.**

#### **Redo**

**The Redo function lets you quickly restore any changes you undid by mistake. It reapplies the most recent action that was undone.**