# Version Control

A revision is an updated or modified version of a document after its initial upload. Revisions help keep track of changes, supporting collaboration and version control within the document management system. Each time a document is checked out and checked in, a new revision is created.

### Check-in and Check-out a Document

Follow these steps to create a revision of your document:

1. Click on a document to view it. 
2. Click the **Document Actions** menu and select **Check out.** This step locks the file for editing and prevents simultaneous changes by other users.<br>

   <figure><img src="/files/YyDugjTrm1quealSBlv7" alt=""><figcaption></figcaption></figure>
3. When you are ready to upload the new version, access the **Document Actions** menu again and select **Check in.**&#x20;

   <figure><img src="/files/bi4kKQd1m6cSO1M1JF5n" alt=""><figcaption></figcaption></figure>
4. Upload a new version of the document. &#x20;

   <div align="left"><figure><img src="/files/LpuFkKHhlc0ZLDwdu7D9" alt="" width="371"><figcaption></figcaption></figure></div>
5. Click **Close** to check in the new file as a revision.

### View Revision History

Follow these steps to view a document's revision history:

1. From the **Document Actions** menu, select **Revisions** to view a list of all the previous versions of the document. The **Revisions** option appears only if multiple document versions exist.<br>

   <figure><img src="/files/DUinowiZ9YK9mVmJYwpY" alt=""><figcaption></figcaption></figure>
2. Select one of the available revisions to open it in a new tab. This allows you to review changes, compare different versions, and ensure you are working with the correct file.<br>

   <figure><img src="/files/Zu5SdCNTY2PCgn8M5J7W" alt=""><figcaption></figcaption></figure>


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