I don't know what 'tab water' is.. What is difference between 'tab water' and common 'water'? - Leo Leo@galaxy.postech.ac.kr ps; With consulting dictionary, I could find 'tap water' mentioned by rara above posting, but I couldn't find 'tab water' by charie. the key of 'p' and 'b' are located with some distance between each other, so I can't think charie mistyped them.