• kartonrealista@lemmy.world
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      1 year ago

      It opens a link to a post in its own instance. So for example

      this is how your comments looks for me with this button. As you can see I’m not logged in, because it’s a different instance compared to what I use. This is what things look like when I click the chain icon to the left of it:

      Here I’m logged in, because it’s your comment opened through my instance.