oh good, I have a problem. I have a Dropbox folder, let's assume I downloaded it to my computer, when I delete it a window appears reporting that if I delete it on my machine it will also delete it in the cloud Dropbox, but that's not what I want , I want to delete it on my computer and keep it in dropbox, from what I understand Dropbox has a selective synchronization tool, it's an option that appears in the window when I try to delete the folder from my machine, but I didn't understand how that is " selective synchronization" works, but could you explain it to me please? thanks.