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2.2. Key function
1. Direction key:
(1)Right key: move the cursor with the direction of
right.
(2)Left key: move the cursor with the direction of left.
(3)Up key: move the cursor with the direction of up.
(4)Down key: move the cursor with the direction of
down.
2. Number keys: To enter numbers and letters; the
number keys from 2-9 can be set for one-key dialling.