AT&T MERLIN LEGEND Release 2.0 MLX Direct-Line Consoles Operator's Manual page 43

About Your Direct-Line Console
To Adjust Screen Brightness
To adjust the brightness (contrast) on the 2-line screen, select
Ctrst from the first Menu screen. Then select Down or Up to
decrease or increase the contrast.
On an MLX-20L console, adjust the contrast with the sliding
control on the top.
To Display Additional Screen Information
If the "greater than" (>) symbol appears next to or above
More, it indicates that additional information is available. To
see this information, press More. A screen similar to the one
in the following illustration is shown.
Console Display
1-31