 Unlike similar database programs of the era, Zoomracks did not support different types of data internally; everything was represented as text.When a rack was opened the cards were displayed as if they were in a sort of linear rolodex, and the user could "zoom in", non-graphically, on any particular area to see more details of the cards in that area, and then zoom in again to see all of the fields on a particular card.The racks could display their cards sorted in a variety of ways, making navigation much easier than with a real-world rolodex, which is sorted only by a single pre-defined index (normally last name).