Lexmark 4I3 - Manual (Page 52)

c. Press Micro , Micro , or Line Feed to move the form so
that the position of the first line you want to print is in the
center of the flat platen rod surface.
a b c d e f
P la te n R o d P la te n R o d
P la te n R o d S u rfa c e F ir s t P r in t L in e
d. If you pressed Micro , you might have slack in the forms.
Pull lightly downward on the forms at the bottom of the
printer to remove the slack.
e. Press Set Top of Form to establish the first print line.
Note: The Set Top of Form key establishes the first line at
which printing is to start on each form. The alarm beeps
each time you press the Set Top of Form key, and the
printer displays
TOP OF FORM SET
1-30 User’s Guide