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

# How to track changes made by co-authors


### Track changes via the History view
 
Authorea allows researchers to easily collaborate on a document in real-time. To facilitate collaboration, Authorea allows researchers to track changes made over time via the History tab.  Changes are automatically accepted by collaborators, but we allow you to revert back to earlier versions, if you wish, by following the following instructions.

1. Click on the History tab
![](https://storage.crisp.chat/users/helpdesk/website/d38f777e-0276-4c52-8a15-b5855ac4903c/af1e7110-c0e0-404a-b8cb-ed50b0ecbd24.png)
2. You can see which changes have been made each day by clicking on the day. Changes will display within your article. Deletions will be crossed out and additions highlighted.

![](https://storage.crisp.chat/users/helpdesk/website/d38f777e-0276-4c52-8a15-b5855ac4903c/34d0c7a8-c09c-4fbe-8801-b181d880e3c2.png)
 3.  To see changes on a more granular level,  expand that date and time and click on changes made over time.  You can revert back to earlier changes by selecting revert and also print the changelog for a specific date.

![](https://storage.crisp.chat/users/helpdesk/website/956ad655c6bd5000/screen-shot-2019-05-06-at-1221_1ab4ztm.png)