Table 4.

Accuracies of trials of manipulation mode (%).

User	Menu positions						Average
	Upper-left	Upper-center	Upper-right	Lower-left	Lower-center	Lower-right
User 1	60	80	100	100	100	100	90
User 2	80	100	100	100	100	100	96.67
User 3	80	100	100	100	100	100	96.67
User 4	80	100	80	100	100	100	93.33
User 5	100	100	100	80	100	80	93.33
Average	80	96	96	96	100	96	94