Usage of "Messaging" box when creating a content item ?

Summary:

Content (please ensure you mask any confidential information):

Hello,

In Recruiting Content Library, when creating a content item, there's a Messaging box :

What's the use of this box ? I didn't find any info on the dedicated section of the Implementing guide

Thanks!

Best regards,

Marcel.

Version (include the version you are using, if applicable):

24B

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