TANDBERG MXP 550 - Manual (Page 23)

General Use
15
3.2.1 Navigation
Arrow keys and OK
Navigate in the menu with arrow keys. The yellow selector on screen
shows the selected item. Press OK to select.
Cancel key
In the main menu, pressing Cancel (X) will hide the menu. If the menu is
hidden, bring it back with OK. In other menus, pressing Cancel (X) takes
you one step back. In an input field, pressing Cancel (X) will delete
characters/numbers to the left.