Export page content to a csv or xml file - Version 5.6.1

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Hello

I have an old C5 website in version 5.6.1
I need to export all the content of my pages to a csv file, or xml file or json file.

I don't find in the dashboard how to do this.
I've only found a "Export Database Tables" button but it isn't what I want to do.

Thank you for your help
Olivier