> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.whaller.com/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).

# Versioning: version management, new version, file edition

From the file box, there are several ways of managing file versions, depending on whether your organisation has a Pro, Business or Enterprise package. 

# Versioning

Keep a history of the documents you're working on and revert back to previous versions. Access a document's menu by clicking on the three small dots next to it, then select " **Version history** ".

![](https://storage.crisp.chat/users/helpdesk/website/e34b3f95dbbcf800/4151bc63-11a0-42fb-a021-6afed2_kfwulm.png)

![](https://storage.crisp.chat/users/helpdesk/website/aa88142731a38000/6c495d53-da3c-4d5e-8a7c-1639da_1wohseu.png)

* Available with the Enterprise offer


# Upload a new version

You can ‘Upload a new version’ (1): this allows you to update a file: 
For Enterprise packages, this creates a new version, 
For Business and Pro offers, this replaces the file.


![](https://storage.crisp.chat/users/helpdesk/website/8643cf9d34bb3800/image_v5c0te.png)




# Download for modification

You can also ‘Download for modification (lock)’ (2) a file at any time: this is the checkout function. 
Here's how it works:

1. At the time of downloading, you define a lock time for the resource: this means that the file will be locked


![](https://storage.crisp.chat/users/helpdesk/website/8643cf9d34bb3800/image_f2p60f.png)


2. You modify your file locally, and you can be sure that it will not be modified in the meantime.
3. Once your modification is complete: you remove the lock, then ‘upload a new version’ (see action 1).