A printer includes a first paper tray carrying a selected print medium and
a user interface having a control associated with a selected attribute of
the set of attributes defining all print media. The control has a first
input device providing a control system input selectively associating a
range of values of the selected attribute with the first paper tray. The
printer control system feeds the print mechanism from the first paper
tray when a print job is received, designating media having a value for
the selected attribute falling within the range of values associated with
the first paper tray.