* KEYCODE_SOFT_LEFT: I have no idea.
* KEYCODE_SOFT_RIGHT: I have no idea.
* KEYCODE_HOME: Perhaps, 'Exit'? The key name is 'Home' but it exits active
application and moves to home screen.
* KEYCODE_BACK: 'Back' as UI key? It's not only used for browser's 'back'.
* KEYCODE_CALL: 'PhoneCall' as Device key?
* KEYCODE_ENDCALL: 'PhoneEndCall' as Device key?
* KEYCODE_SYM: 'Symbol' as Modifier key? The Android document says this is a
modifier, but D3E defines only 'SymbolLock'.
* KEYCODE_NUM: I'm not sure what's this key.
* KEYCODE_NOTIFICATION: I'm not sure what's this key too.
* KEYCODE_PICTSYMBOLS: 'PictureSymbolMode' as IME key?
* KEYCODE_MEDIA_CLOSE: 'Close' as Device key? It closes opened tray by 'Eject'.
Then, 'Eject' should be separated as 'Eject' and 'EjectClose'?
* KEYCODE_ZOOM_IN: 'ZoomIn' as UI?
* KEYCODE_ZOOM_OUT: 'ZoomOut' as UI?
* KEYCODE_TV: Perhaps, 'Live'? But I think that 'TV' as Media key is better.
* KEYCODE_DVR: 'DVR' or 'VideoRecorder' as Media key?
* KEYCODE_TV_POWER: 'TVPower' as Media key?
* KEYCODE_TV_INPUT: 'TVSelectInput' as Media key?
* KEYCODE_STB_POWER: 'STBPower' as Media key?
* KEYCODE_STB_INPUT: 'STBSelectInput' as Media key?
* KEYCODE_AVR_POWER: 'AVReceiverPower' as Media key?
* KEYCODE_AVR_INPUT: 'AVReceiverSelectInput' as Media key?
* KEYCODE_LANGUAGE_SWITCH: 'ToggleLanguage' or 'SwitchLanguage' as IME key?
* KEYCODE_MANNER_MODE: 'ToggleMannerMode', 'SwitchMannerMode' or just
'MannerMode' as Device key?
* KEYCODE_3D_MODE: 'Toggle3DMode' as Media key?
* KEYCODE_CONTACTS: 'LaunchAddressBook' as General key?
* KEYCODE_CALENDAR: 'LaunchCalendar' as General key?
* KEYCODE_MUSIC: 'LaunchMusicPlayer' as General key?
* KEYCODE_CALCULATOR: 'LaunchCalculator' as General key?
* KEYCODE_ZENKAKU_HANKAKU: 'ToggleWidth' as IME key? Both 'FullWidth' and
'HalfWidth' are not useful for this.
* KEYCODE_KATAKANA_HIRAGANA: 'ToggleKatakanaHiragana' as IME key? 'Katakana'
and 'Hiragana' key are not useful for this.