Lexmark 4I3 - Manual (Page 96)

4. When you release the key, the printer automatically saves the
current value.
Note: The ’s indicate the position of the print head relative to the
limits.
As long as you press Darker or Lighter, the printer displays an
increasing amount of darkness or lightness until one of the limits of
the gap is reached. The printer displays either
or
As you adjust the gap, you may also see the printer display
This message tells you that the forms thickness setting is at the
automatically set value.
See “Understanding the Operator Panel” in IBM 4230 Printer Models
102, 1I1, 202, 2I1, 4I3, and 5I3 Operator Panel Instructions for more
information on this setting.
LIGHT | | DARK
DARKNESS LIMIT REACHED
LIGHT | ------------------| DARK
LIGHTNESS LIMIT REACHED
LIGHT | ---------| DARK
DEFAULT DARKNESS
1-74 User’s Guide