If you use Office 365, you are probably aware of the Cloud Policy Service for Office (aka Office App Configuration) portal (https://config.office.com/) you use to create your custom Office installation XML file and Office configuration (similar to the GPO).
Well, you can now export your policy configuration in CSV to help you identify and review your Office configuration settings.
To do so, logon to the Office App configuration portal (https://config.office.com/) and access the Customization\Policy Management blade to select the policy you want to export and click on the Export button
Once exported you can open the CSV file to review all settings configured for the selected policy