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navigate.
OK/Selection key
Press it to confirm your selection.
Delete key
Press it to delete a character before cursor.
Linefeed
This key helps to switch to another line when the interface is in the edit interface.
Shift key
Press this key to switch between input methods.
Space key
Use this key for a blank space.
Sym key
Press it in the edit interface to input a symbol.
Alt key
In edit interface, press it to input an alternative symbol or number.
Audio player key
Press key to access audio player interface.
TV key
Press key to access TV interface.
Number and letters
Press number keys or letter keys to in input or edit state to input numbers or letters.
