 Zoomracks II also added a rudimentary "macro" system that allowed the user to assign a series of commands to a letter on the keyboard.A series of programming commands could be added by the user to the resulting macros, including basic loops, if/then and data input.Macros were physically stored as cards in a separate rack, and could be used "against" any other rack, although the usefulness of this seems questionable (since code is generally tightly bound to the data it works on).