Brother HL 2700CN - Manual (Page 61)

3 - 4 CONTROL PANEL
Back button
If you press the Back button when the printer is in the on-line (Ready) state, it goes off-line and the LCD
goes to the menu.
Pressing the Back allows you to return to the previous level from the current menu level.
The Back button also allows you to select the previous digit while setting numbers.
When you select the leftmost digit, the Back button allows you to go up one level in the menu.
When you select a setting and it does not have an asterisk (*) (Set button was not pressed), the Back
button allows you to return to the previous menu level with the original setting unchanged.
When you press the Set button to choose a setting, an asterisk appears briefly at the end of the
display. Since the asterisk shows what you have chosen, you can easily see the current settings as
you look through the display.