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I have a lot of volumes (folders) mounted from remote machines, about 10 of them, which I set to be mounted automatically when I'm logging in by adding them to the Login Items list in Users & Groups. Of course, I made sure to tick the Hide check box of each of the volumes, yet OS X opens each of the folders whenever I log in so I have to close them one by one manually.
When an application starts, the hide button makes sure no windows are drawn visibly. Can Finder be configured to respect the "hide" flag similarly?