TAG MIL-BOOK 10 - Manual (Page 60)

The menu can be divided into four areas:
On the top line is the menu bar containing the titles of the available
menus. Each menu title brings a specific menu.
The center left column of the menu contains items that you can set for
the selected menu title. The arrow sign in front of an item indicates
there is a sub-menu for the item.
The right column of the menu provides help information of the
selected item.
The bottom lines give keyboard instructions for moving around and
making selections.
Setup Configuration Utility (SCU) 5-3