Casio QT-6000 Training Manual page 66

The new function keys are as follows
1 Customer ID (function code 148)
2 Item Search (function code 246)
3 Location Change (function code 260)
4 Mode Key (Function code 124)
5 Order Character Change (Function Code 252)
6 Payment (Function Code 149)
7 Table Share (Function Code 261)
All these function keys are explained in detail in chapter 5 of this
manual.
Eliminated Function Keys
1 X/Z Mode (Function Code 122)
2 Reverse Display (Function Code 206)
66