I have a question about the Island time and sales tool available on their website. let's say that a trade is marked as B 500 80.00 does that necessarily mean that 500 shares were up for sale at 80 ON THE BOOK, and then a buyer came in and grabbed them, or.........? I am asking this because I remember once buying shares through the Island book but my trade was marked as S 100 50.00 in that particular trade, it looks like the 100 shares were offered but were HIDDEN. does that influence the way the trade is marked? thanks