Modify vs. Manage?

Modify vs. Manage?

Hello,

Sorry for the (probably) easy question,
When I share a resource or resource group,
I can add users/groups to 3 lists: Read, Modify, Manage.
I know what the difference between Read / Modify is.. But what's the difference with Manage?

I tried it, but I am not seeing any (obvious)  difference.

Kind regards,
Frank     
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