User`s manual

2-6
Touchscreens
Introduction
Types of Keys
There are two types of keys used on 3700 system touchscreens:
❏ Direct access
❏ Lookup
Both types are explained below.
Direct Access Keys
A direct access key posts a menu item or performs a function
without any intermediate steps. For example, a [Shrimp
Cocktail] key posts a shrimp cocktail.
Keys may be optionally programmed to require intermediate
steps, such as entering a price, reference number, or
authorization number.
Lookup Keys
A lookup key displays two or more items on the screen, from
which you may choose one or more. Each lookup key has a
unique code. When a lookup key is pressed, the system scans
the database for items with the same code. After it finds a
match, it displays that item on the touchscreen.
Depending on system programming, a lookup key displays
items either in a numbered list (called a number lookup, or
NLU) or as touchscreen keys (called a screen lookup, or SLU).
For example, if you press an [Appetizer] NLU key, it displays a
list:
If you press an [Appetizer] SLU key, it displays a touchscreen
with keys:
1 Shrimp Cocktail
2 Chicken Wings
3 Egg Rolls
Egg
Rolls
Shrimp
Cocktail
Chicken
Wings