well this feature was reported some time ago and as zsangerous said many times probably. it's just not clear and it looks like a bug and personally I think this should have been explained already.
Sorry for editing the first tutorial on the list, I just thought it was a bug and wanted to bring your attention to this bug, which apparently worked like a charm :)
I have under 3500 rep and am able to edit tutorials, so maybe it's worth looking into it.
Again sorry for drastic action and thank you very much for clearing it out, no harm meant.