diff --git a/include/android/keycodes.h b/include/android/keycodes.h
index 75d0ab6..ec4b0c8 100644
--- a/include/android/keycodes.h
+++ b/include/android/keycodes.h
@@ -14,6 +14,15 @@
  * limitations under the License.
  */
 
+/**
+ * @addtogroup Input
+ * @{
+ */
+
+/**
+ * @file keycodes.h
+ */
+
 #ifndef _ANDROID_KEYCODES_H
 #define _ANDROID_KEYCODES_H
 
@@ -39,269 +48,676 @@
 extern "C" {
 #endif
 
-/*
+/**
  * Key codes.
  */
 enum {
+    /** Unknown key code. */
     AKEYCODE_UNKNOWN         = 0,
+    /** Soft Left key.
+     * Usually situated below the display on phones and used as a multi-function
+     * feature key for selecting a software defined function shown on the bottom left
+     * of the display. */
     AKEYCODE_SOFT_LEFT       = 1,
+    /** Soft Right key.
+     * Usually situated below the display on phones and used as a multi-function
+     * feature key for selecting a software defined function shown on the bottom right
+     * of the display. */
     AKEYCODE_SOFT_RIGHT      = 2,
+    /** Home key.
+     * This key is handled by the framework and is never delivered to applications. */
     AKEYCODE_HOME            = 3,
+    /** Back key. */
     AKEYCODE_BACK            = 4,
+    /** Call key. */
     AKEYCODE_CALL            = 5,
+    /** End Call key. */
     AKEYCODE_ENDCALL         = 6,
+    /** '0' key. */
     AKEYCODE_0               = 7,
+    /** '1' key. */
     AKEYCODE_1               = 8,
+    /** '2' key. */
     AKEYCODE_2               = 9,
+    /** '3' key. */
     AKEYCODE_3               = 10,
+    /** '4' key. */
     AKEYCODE_4               = 11,
+    /** '5' key. */
     AKEYCODE_5               = 12,
+    /** '6' key. */
     AKEYCODE_6               = 13,
+    /** '7' key. */
     AKEYCODE_7               = 14,
+    /** '8' key. */
     AKEYCODE_8               = 15,
+    /** '9' key. */
     AKEYCODE_9               = 16,
+    /** '*' key. */
     AKEYCODE_STAR            = 17,
+    /** '#' key. */
     AKEYCODE_POUND           = 18,
+    /** Directional Pad Up key.
+     * May also be synthesized from trackball motions. */
     AKEYCODE_DPAD_UP         = 19,
+    /** Directional Pad Down key.
+     * May also be synthesized from trackball motions. */
     AKEYCODE_DPAD_DOWN       = 20,
+    /** Directional Pad Left key.
+     * May also be synthesized from trackball motions. */
     AKEYCODE_DPAD_LEFT       = 21,
+    /** Directional Pad Right key.
+     * May also be synthesized from trackball motions. */
     AKEYCODE_DPAD_RIGHT      = 22,
+    /** Directional Pad Center key.
+     * May also be synthesized from trackball motions. */
     AKEYCODE_DPAD_CENTER     = 23,
+    /** Volume Up key.
+     * Adjusts the speaker volume up. */
     AKEYCODE_VOLUME_UP       = 24,
+    /** Volume Down key.
+     * Adjusts the speaker volume down. */
     AKEYCODE_VOLUME_DOWN     = 25,
+    /** Power key. */
     AKEYCODE_POWER           = 26,
+    /** Camera key.
+     * Used to launch a camera application or take pictures. */
     AKEYCODE_CAMERA          = 27,
+    /** Clear key. */
     AKEYCODE_CLEAR           = 28,
+    /** 'A' key. */
     AKEYCODE_A               = 29,
+    /** 'B' key. */
     AKEYCODE_B               = 30,
+    /** 'C' key. */
     AKEYCODE_C               = 31,
+    /** 'D' key. */
     AKEYCODE_D               = 32,
+    /** 'E' key. */
     AKEYCODE_E               = 33,
+    /** 'F' key. */
     AKEYCODE_F               = 34,
+    /** 'G' key. */
     AKEYCODE_G               = 35,
+    /** 'H' key. */
     AKEYCODE_H               = 36,
+    /** 'I' key. */
     AKEYCODE_I               = 37,
+    /** 'J' key. */
     AKEYCODE_J               = 38,
+    /** 'K' key. */
     AKEYCODE_K               = 39,
+    /** 'L' key. */
     AKEYCODE_L               = 40,
+    /** 'M' key. */
     AKEYCODE_M               = 41,
+    /** 'N' key. */
     AKEYCODE_N               = 42,
+    /** 'O' key. */
     AKEYCODE_O               = 43,
+    /** 'P' key. */
     AKEYCODE_P               = 44,
+    /** 'Q' key. */
     AKEYCODE_Q               = 45,
+    /** 'R' key. */
     AKEYCODE_R               = 46,
+    /** 'S' key. */
     AKEYCODE_S               = 47,
+    /** 'T' key. */
     AKEYCODE_T               = 48,
+    /** 'U' key. */
     AKEYCODE_U               = 49,
+    /** 'V' key. */
     AKEYCODE_V               = 50,
+    /** 'W' key. */
     AKEYCODE_W               = 51,
+    /** 'X' key. */
     AKEYCODE_X               = 52,
+    /** 'Y' key. */
     AKEYCODE_Y               = 53,
+    /** 'Z' key. */
     AKEYCODE_Z               = 54,
+    /** ',' key. */
     AKEYCODE_COMMA           = 55,
+    /** '.' key. */
     AKEYCODE_PERIOD          = 56,
+    /** Left Alt modifier key. */
     AKEYCODE_ALT_LEFT        = 57,
+    /** Right Alt modifier key. */
     AKEYCODE_ALT_RIGHT       = 58,
+    /** Left Shift modifier key. */
     AKEYCODE_SHIFT_LEFT      = 59,
+    /** Right Shift modifier key. */
     AKEYCODE_SHIFT_RIGHT     = 60,
+    /** Tab key. */
     AKEYCODE_TAB             = 61,
+    /** Space key. */
     AKEYCODE_SPACE           = 62,
+    /** Symbol modifier key.
+     * Used to enter alternate symbols. */
     AKEYCODE_SYM             = 63,
+    /** Explorer special function key.
+     * Used to launch a browser application. */
     AKEYCODE_EXPLORER        = 64,
+    /** Envelope special function key.
+     * Used to launch a mail application. */
     AKEYCODE_ENVELOPE        = 65,
+    /** Enter key. */
     AKEYCODE_ENTER           = 66,
+    /** Backspace key.
+     * Deletes characters before the insertion point, unlike {@link AKEYCODE_FORWARD_DEL}. */
     AKEYCODE_DEL             = 67,
+    /** '`' (backtick) key. */
     AKEYCODE_GRAVE           = 68,
+    /** '-'. */
     AKEYCODE_MINUS           = 69,
+    /** '=' key. */
     AKEYCODE_EQUALS          = 70,
+    /** '[' key. */
     AKEYCODE_LEFT_BRACKET    = 71,
+    /** ']' key. */
     AKEYCODE_RIGHT_BRACKET   = 72,
+    /** '\' key. */
     AKEYCODE_BACKSLASH       = 73,
+    /** ';' key. */
     AKEYCODE_SEMICOLON       = 74,
+    /** ''' (apostrophe) key. */
     AKEYCODE_APOSTROPHE      = 75,
+    /** '/' key. */
     AKEYCODE_SLASH           = 76,
+    /** '@' key. */
     AKEYCODE_AT              = 77,
+    /** Number modifier key.
+     * Used to enter numeric symbols.
+     * This key is not {@link AKEYCODE_NUM_LOCK}; it is more like {@link AKEYCODE_ALT_LEFT}. */
     AKEYCODE_NUM             = 78,
+    /** Headset Hook key.
+     * Used to hang up calls and stop media. */
     AKEYCODE_HEADSETHOOK     = 79,
-    AKEYCODE_FOCUS           = 80,   // *Camera* focus
+    /** Camera Focus key.
+     * Used to focus the camera. */
+    AKEYCODE_FOCUS           = 80,
+    /** '+' key. */
     AKEYCODE_PLUS            = 81,
+    /** Menu key. */
     AKEYCODE_MENU            = 82,
+    /** Notification key. */
     AKEYCODE_NOTIFICATION    = 83,
+    /** Search key. */
     AKEYCODE_SEARCH          = 84,
+    /** Play/Pause media key. */
     AKEYCODE_MEDIA_PLAY_PAUSE= 85,
+    /** Stop media key. */
     AKEYCODE_MEDIA_STOP      = 86,
+    /** Play Next media key. */
     AKEYCODE_MEDIA_NEXT      = 87,
+    /** Play Previous media key. */
     AKEYCODE_MEDIA_PREVIOUS  = 88,
+    /** Rewind media key. */
     AKEYCODE_MEDIA_REWIND    = 89,
+    /** Fast Forward media key. */
     AKEYCODE_MEDIA_FAST_FORWARD = 90,
+    /** Mute key.
+     * Mutes the microphone, unlike {@link AKEYCODE_VOLUME_MUTE}. */
     AKEYCODE_MUTE            = 91,
+    /** Page Up key. */
     AKEYCODE_PAGE_UP         = 92,
+    /** Page Down key. */
     AKEYCODE_PAGE_DOWN       = 93,
+    /** Picture Symbols modifier key.
+     * Used to switch symbol sets (Emoji, Kao-moji). */
     AKEYCODE_PICTSYMBOLS     = 94,
+    /** Switch Charset modifier key.
+     * Used to switch character sets (Kanji, Katakana). */
     AKEYCODE_SWITCH_CHARSET  = 95,
+    /** A Button key.
+     * On a game controller, the A button should be either the button labeled A
+     * or the first button on the bottom row of controller buttons. */
     AKEYCODE_BUTTON_A        = 96,
+    /** B Button key.
+     * On a game controller, the B button should be either the button labeled B
+     * or the second button on the bottom row of controller buttons. */
     AKEYCODE_BUTTON_B        = 97,
+    /** C Button key.
+     * On a game controller, the C button should be either the button labeled C
+     * or the third button on the bottom row of controller buttons. */
     AKEYCODE_BUTTON_C        = 98,
+    /** X Button key.
+     * On a game controller, the X button should be either the button labeled X
+     * or the first button on the upper row of controller buttons. */
     AKEYCODE_BUTTON_X        = 99,
+    /** Y Button key.
+     * On a game controller, the Y button should be either the button labeled Y
+     * or the second button on the upper row of controller buttons. */
     AKEYCODE_BUTTON_Y        = 100,
+    /** Z Button key.
+     * On a game controller, the Z button should be either the button labeled Z
+     * or the third button on the upper row of controller buttons. */
     AKEYCODE_BUTTON_Z        = 101,
+    /** L1 Button key.
+     * On a game controller, the L1 button should be either the button labeled L1 (or L)
+     * or the top left trigger button. */
     AKEYCODE_BUTTON_L1       = 102,
+    /** R1 Button key.
+     * On a game controller, the R1 button should be either the button labeled R1 (or R)
+     * or the top right trigger button. */
     AKEYCODE_BUTTON_R1       = 103,
+    /** L2 Button key.
+     * On a game controller, the L2 button should be either the button labeled L2
+     * or the bottom left trigger button. */
     AKEYCODE_BUTTON_L2       = 104,
+    /** R2 Button key.
+     * On a game controller, the R2 button should be either the button labeled R2
+     * or the bottom right trigger button. */
     AKEYCODE_BUTTON_R2       = 105,
+    /** Left Thumb Button key.
+     * On a game controller, the left thumb button indicates that the left (or only)
+     * joystick is pressed. */
     AKEYCODE_BUTTON_THUMBL   = 106,
+    /** Right Thumb Button key.
+     * On a game controller, the right thumb button indicates that the right
+     * joystick is pressed. */
     AKEYCODE_BUTTON_THUMBR   = 107,
+    /** Start Button key.
+     * On a game controller, the button labeled Start. */
     AKEYCODE_BUTTON_START    = 108,
+    /** Select Button key.
+     * On a game controller, the button labeled Select. */
     AKEYCODE_BUTTON_SELECT   = 109,
+    /** Mode Button key.
+     * On a game controller, the button labeled Mode. */
     AKEYCODE_BUTTON_MODE     = 110,
+    /** Escape key. */
     AKEYCODE_ESCAPE          = 111,
+    /** Forward Delete key.
+     * Deletes characters ahead of the insertion point, unlike {@link AKEYCODE_DEL}. */
     AKEYCODE_FORWARD_DEL     = 112,
+    /** Left Control modifier key. */
     AKEYCODE_CTRL_LEFT       = 113,
+    /** Right Control modifier key. */
     AKEYCODE_CTRL_RIGHT      = 114,
+    /** Caps Lock key. */
     AKEYCODE_CAPS_LOCK       = 115,
+    /** Scroll Lock key. */
     AKEYCODE_SCROLL_LOCK     = 116,
+    /** Left Meta modifier key. */
     AKEYCODE_META_LEFT       = 117,
+    /** Right Meta modifier key. */
     AKEYCODE_META_RIGHT      = 118,
+    /** Function modifier key. */
     AKEYCODE_FUNCTION        = 119,
+    /** System Request / Print Screen key. */
     AKEYCODE_SYSRQ           = 120,
+    /** Break / Pause key. */
     AKEYCODE_BREAK           = 121,
+    /** Home Movement key.
+     * Used for scrolling or moving the cursor around to the start of a line
+     * or to the top of a list. */
     AKEYCODE_MOVE_HOME       = 122,
+    /** End Movement key.
+     * Used for scrolling or moving the cursor around to the end of a line
+     * or to the bottom of a list. */
     AKEYCODE_MOVE_END        = 123,
+    /** Insert key.
+     * Toggles insert / overwrite edit mode. */
     AKEYCODE_INSERT          = 124,
+    /** Forward key.
+     * Navigates forward in the history stack.  Complement of {@link AKEYCODE_BACK}. */
     AKEYCODE_FORWARD         = 125,
+    /** Play media key. */
     AKEYCODE_MEDIA_PLAY      = 126,
+    /** Pause media key. */
     AKEYCODE_MEDIA_PAUSE     = 127,
+    /** Close media key.
+     * May be used to close a CD tray, for example. */
     AKEYCODE_MEDIA_CLOSE     = 128,
+    /** Eject media key.
+     * May be used to eject a CD tray, for example. */
     AKEYCODE_MEDIA_EJECT     = 129,
+    /** Record media key. */
     AKEYCODE_MEDIA_RECORD    = 130,
+    /** F1 key. */
     AKEYCODE_F1              = 131,
+    /** F2 key. */
     AKEYCODE_F2              = 132,
+    /** F3 key. */
     AKEYCODE_F3              = 133,
+    /** F4 key. */
     AKEYCODE_F4              = 134,
+    /** F5 key. */
     AKEYCODE_F5              = 135,
+    /** F6 key. */
     AKEYCODE_F6              = 136,
+    /** F7 key. */
     AKEYCODE_F7              = 137,
+    /** F8 key. */
     AKEYCODE_F8              = 138,
+    /** F9 key. */
     AKEYCODE_F9              = 139,
+    /** F10 key. */
     AKEYCODE_F10             = 140,
+    /** F11 key. */
     AKEYCODE_F11             = 141,
+    /** F12 key. */
     AKEYCODE_F12             = 142,
+    /** Num Lock key.
+     * This is the Num Lock key; it is different from {@link AKEYCODE_NUM}.
+     * This key alters the behavior of other keys on the numeric keypad. */
     AKEYCODE_NUM_LOCK        = 143,
+    /** Numeric keypad '0' key. */
     AKEYCODE_NUMPAD_0        = 144,
+    /** Numeric keypad '1' key. */
     AKEYCODE_NUMPAD_1        = 145,
+    /** Numeric keypad '2' key. */
     AKEYCODE_NUMPAD_2        = 146,
+    /** Numeric keypad '3' key. */
     AKEYCODE_NUMPAD_3        = 147,
+    /** Numeric keypad '4' key. */
     AKEYCODE_NUMPAD_4        = 148,
+    /** Numeric keypad '5' key. */
     AKEYCODE_NUMPAD_5        = 149,
+    /** Numeric keypad '6' key. */
     AKEYCODE_NUMPAD_6        = 150,
+    /** Numeric keypad '7' key. */
     AKEYCODE_NUMPAD_7        = 151,
+    /** Numeric keypad '8' key. */
     AKEYCODE_NUMPAD_8        = 152,
+    /** Numeric keypad '9' key. */
     AKEYCODE_NUMPAD_9        = 153,
+    /** Numeric keypad '/' key (for division). */
     AKEYCODE_NUMPAD_DIVIDE   = 154,
+    /** Numeric keypad '*' key (for multiplication). */
     AKEYCODE_NUMPAD_MULTIPLY = 155,
+    /** Numeric keypad '-' key (for subtraction). */
     AKEYCODE_NUMPAD_SUBTRACT = 156,
+    /** Numeric keypad '+' key (for addition). */
     AKEYCODE_NUMPAD_ADD      = 157,
+    /** Numeric keypad '.' key (for decimals or digit grouping). */
     AKEYCODE_NUMPAD_DOT      = 158,
+    /** Numeric keypad ',' key (for decimals or digit grouping). */
     AKEYCODE_NUMPAD_COMMA    = 159,
+    /** Numeric keypad Enter key. */
     AKEYCODE_NUMPAD_ENTER    = 160,
+    /** Numeric keypad '=' key. */
     AKEYCODE_NUMPAD_EQUALS   = 161,
+    /** Numeric keypad '(' key. */
     AKEYCODE_NUMPAD_LEFT_PAREN = 162,
+    /** Numeric keypad ')' key. */
     AKEYCODE_NUMPAD_RIGHT_PAREN = 163,
+    /** Volume Mute key.
+     * Mutes the speaker, unlike {@link AKEYCODE_MUTE}.
+     * This key should normally be implemented as a toggle such that the first press
+     * mutes the speaker and the second press restores the original volume. */
     AKEYCODE_VOLUME_MUTE     = 164,
+    /** Info key.
+     * Common on TV remotes to show additional information related to what is
+     * currently being viewed. */
     AKEYCODE_INFO            = 165,
+    /** Channel up key.
+     * On TV remotes, increments the television channel. */
     AKEYCODE_CHANNEL_UP      = 166,
+    /** Channel down key.
+     * On TV remotes, decrements the television channel. */
     AKEYCODE_CHANNEL_DOWN    = 167,
+    /** Zoom in key. */
     AKEYCODE_ZOOM_IN         = 168,
+    /** Zoom out key. */
     AKEYCODE_ZOOM_OUT        = 169,
+    /** TV key.
+     * On TV remotes, switches to viewing live TV. */
     AKEYCODE_TV              = 170,
+    /** Window key.
+     * On TV remotes, toggles picture-in-picture mode or other windowing functions. */
     AKEYCODE_WINDOW          = 171,
+    /** Guide key.
+     * On TV remotes, shows a programming guide. */
     AKEYCODE_GUIDE           = 172,
+    /** DVR key.
+     * On some TV remotes, switches to a DVR mode for recorded shows. */
     AKEYCODE_DVR             = 173,
+    /** Bookmark key.
+     * On some TV remotes, bookmarks content or web pages. */
     AKEYCODE_BOOKMARK        = 174,
+    /** Toggle captions key.
+     * Switches the mode for closed-captioning text, for example during television shows. */
     AKEYCODE_CAPTIONS        = 175,
+    /** Settings key.
+     * Starts the system settings activity. */
     AKEYCODE_SETTINGS        = 176,
+    /** TV power key.
+     * On TV remotes, toggles the power on a television screen. */
     AKEYCODE_TV_POWER        = 177,
+    /** TV input key.
+     * On TV remotes, switches the input on a television screen. */
     AKEYCODE_TV_INPUT        = 178,
+    /** Set-top-box power key.
+     * On TV remotes, toggles the power on an external Set-top-box. */
     AKEYCODE_STB_POWER       = 179,
+    /** Set-top-box input key.
+     * On TV remotes, switches the input mode on an external Set-top-box. */
     AKEYCODE_STB_INPUT       = 180,
+    /** A/V Receiver power key.
+     * On TV remotes, toggles the power on an external A/V Receiver. */
     AKEYCODE_AVR_POWER       = 181,
+    /** A/V Receiver input key.
+     * On TV remotes, switches the input mode on an external A/V Receiver. */
     AKEYCODE_AVR_INPUT       = 182,
+    /** Red "programmable" key.
+     * On TV remotes, acts as a contextual/programmable key. */
     AKEYCODE_PROG_RED        = 183,
+    /** Green "programmable" key.
+     * On TV remotes, actsas a contextual/programmable key. */
     AKEYCODE_PROG_GREEN      = 184,
+    /** Yellow "programmable" key.
+     * On TV remotes, acts as a contextual/programmable key. */
     AKEYCODE_PROG_YELLOW     = 185,
+    /** Blue "programmable" key.
+     * On TV remotes, acts as a contextual/programmable key. */
     AKEYCODE_PROG_BLUE       = 186,
+    /** App switch key.
+     * Should bring up the application switcher dialog. */
     AKEYCODE_APP_SWITCH      = 187,
+    /** Generic Game Pad Button #1.*/
     AKEYCODE_BUTTON_1        = 188,
+    /** Generic Game Pad Button #2.*/
     AKEYCODE_BUTTON_2        = 189,
+    /** Generic Game Pad Button #3.*/
     AKEYCODE_BUTTON_3        = 190,
+    /** Generic Game Pad Button #4.*/
     AKEYCODE_BUTTON_4        = 191,
+    /** Generic Game Pad Button #5.*/
     AKEYCODE_BUTTON_5        = 192,
+    /** Generic Game Pad Button #6.*/
     AKEYCODE_BUTTON_6        = 193,
+    /** Generic Game Pad Button #7.*/
     AKEYCODE_BUTTON_7        = 194,
+    /** Generic Game Pad Button #8.*/
     AKEYCODE_BUTTON_8        = 195,
+    /** Generic Game Pad Button #9.*/
     AKEYCODE_BUTTON_9        = 196,
+    /** Generic Game Pad Button #10.*/
     AKEYCODE_BUTTON_10       = 197,
+    /** Generic Game Pad Button #11.*/
     AKEYCODE_BUTTON_11       = 198,
+    /** Generic Game Pad Button #12.*/
     AKEYCODE_BUTTON_12       = 199,
+    /** Generic Game Pad Button #13.*/
     AKEYCODE_BUTTON_13       = 200,
+    /** Generic Game Pad Button #14.*/
     AKEYCODE_BUTTON_14       = 201,
+    /** Generic Game Pad Button #15.*/
     AKEYCODE_BUTTON_15       = 202,
+    /** Generic Game Pad Button #16.*/
     AKEYCODE_BUTTON_16       = 203,
+    /** Language Switch key.
+     * Toggles the current input language such as switching between English and Japanese on
+     * a QWERTY keyboard.  On some devices, the same function may be performed by
+     * pressing Shift+Spacebar. */
     AKEYCODE_LANGUAGE_SWITCH = 204,
+    /** Manner Mode key.
+     * Toggles silent or vibrate mode on and off to make the device behave more politely
+     * in certain settings such as on a crowded train.  On some devices, the key may only
+     * operate when long-pressed. */
     AKEYCODE_MANNER_MODE     = 205,
+    /** 3D Mode key.
+     * Toggles the display between 2D and 3D mode. */
     AKEYCODE_3D_MODE         = 206,
+    /** Contacts special function key.
+     * Used to launch an address book application. */
     AKEYCODE_CONTACTS        = 207,
+    /** Calendar special function key.
+     * Used to launch a calendar application. */
     AKEYCODE_CALENDAR        = 208,
+    /** Music special function key.
+     * Used to launch a music player application. */
     AKEYCODE_MUSIC           = 209,
+    /** Calculator special function key.
+     * Used to launch a calculator application. */
     AKEYCODE_CALCULATOR      = 210,
+    /** Japanese full-width / half-width key. */
     AKEYCODE_ZENKAKU_HANKAKU = 211,
+    /** Japanese alphanumeric key. */
     AKEYCODE_EISU            = 212,
+    /** Japanese non-conversion key. */
     AKEYCODE_MUHENKAN        = 213,
+    /** Japanese conversion key. */
     AKEYCODE_HENKAN          = 214,
+    /** Japanese katakana / hiragana key. */
     AKEYCODE_KATAKANA_HIRAGANA = 215,
+    /** Japanese Yen key. */
     AKEYCODE_YEN             = 216,
+    /** Japanese Ro key. */
     AKEYCODE_RO              = 217,
+    /** Japanese kana key. */
     AKEYCODE_KANA            = 218,
+    /** Assist key.
+     * Launches the global assist activity.  Not delivered to applications. */
     AKEYCODE_ASSIST          = 219,
+    /** Brightness Down key.
+     * Adjusts the screen brightness down. */
     AKEYCODE_BRIGHTNESS_DOWN = 220,
+    /** Brightness Up key.
+     * Adjusts the screen brightness up. */
     AKEYCODE_BRIGHTNESS_UP   = 221,
+    /** Audio Track key.
+     * Switches the audio tracks. */
     AKEYCODE_MEDIA_AUDIO_TRACK = 222,
+    /** Sleep key.
+     * Puts the device to sleep.  Behaves somewhat like {@link AKEYCODE_POWER} but it
+     * has no effect if the device is already asleep. */
     AKEYCODE_SLEEP           = 223,
+    /** Wakeup key.
+     * Wakes up the device.  Behaves somewhat like {@link AKEYCODE_POWER} but it
+     * has no effect if the device is already awake. */
     AKEYCODE_WAKEUP          = 224,
+    /** Pairing key.
+     * Initiates peripheral pairing mode. Useful for pairing remote control
+     * devices or game controllers, especially if no other input mode is
+     * available. */
     AKEYCODE_PAIRING         = 225,
+    /** Media Top Menu key.
+     * Goes to the top of media menu. */
     AKEYCODE_MEDIA_TOP_MENU  = 226,
+    /** '11' key. */
     AKEYCODE_11              = 227,
+    /** '12' key. */
     AKEYCODE_12              = 228,
+    /** Last Channel key.
+     * Goes to the last viewed channel. */
     AKEYCODE_LAST_CHANNEL    = 229,
+    /** TV data service key.
+     * Displays data services like weather, sports. */
     AKEYCODE_TV_DATA_SERVICE = 230,
+    /** Voice Assist key.
+     * Launches the global voice assist activity. Not delivered to applications. */
     AKEYCODE_VOICE_ASSIST    = 231,
+    /** Radio key.
+     * Toggles TV service / Radio service. */
     AKEYCODE_TV_RADIO_SERVICE = 232,
+    /** Teletext key.
+     * Displays Teletext service. */
     AKEYCODE_TV_TELETEXT     = 233,
+    /** Number entry key.
+     * Initiates to enter multi-digit channel nubmber when each digit key is assigned
+     * for selecting separate channel. Corresponds to Number Entry Mode (0x1D) of CEC
+     * User Control Code. */
     AKEYCODE_TV_NUMBER_ENTRY = 234,
+    /** Analog Terrestrial key.
+     * Switches to analog terrestrial broadcast service. */
     AKEYCODE_TV_TERRESTRIAL_ANALOG = 235,
+    /** Digital Terrestrial key.
+     * Switches to digital terrestrial broadcast service. */
     AKEYCODE_TV_TERRESTRIAL_DIGITAL = 236,
+    /** Satellite key.
+     * Switches to digital satellite broadcast service. */
     AKEYCODE_TV_SATELLITE    = 237,
+    /** BS key.
+     * Switches to BS digital satellite broadcasting service available in Japan. */
     AKEYCODE_TV_SATELLITE_BS = 238,
+    /** CS key.
+     * Switches to CS digital satellite broadcasting service available in Japan. */
     AKEYCODE_TV_SATELLITE_CS = 239,
+    /** BS/CS key.
+     * Toggles between BS and CS digital satellite services. */
     AKEYCODE_TV_SATELLITE_SERVICE = 240,
+    /** Toggle Network key.
+     * Toggles selecting broacast services. */
     AKEYCODE_TV_NETWORK      = 241,
+    /** Antenna/Cable key.
+     * Toggles broadcast input source between antenna and cable. */
     AKEYCODE_TV_ANTENNA_CABLE = 242,
+    /** HDMI #1 key.
+     * Switches to HDMI input #1. */
     AKEYCODE_TV_INPUT_HDMI_1 = 243,
+    /** HDMI #2 key.
+     * Switches to HDMI input #2. */
     AKEYCODE_TV_INPUT_HDMI_2 = 244,
+    /** HDMI #3 key.
+     * Switches to HDMI input #3. */
     AKEYCODE_TV_INPUT_HDMI_3 = 245,
+    /** HDMI #4 key.
+     * Switches to HDMI input #4. */
     AKEYCODE_TV_INPUT_HDMI_4 = 246,
+    /** Composite #1 key.
+     * Switches to composite video input #1. */
     AKEYCODE_TV_INPUT_COMPOSITE_1 = 247,
+    /** Composite #2 key.
+     * Switches to composite video input #2. */
     AKEYCODE_TV_INPUT_COMPOSITE_2 = 248,
+    /** Component #1 key.
+     * Switches to component video input #1. */
     AKEYCODE_TV_INPUT_COMPONENT_1 = 249,
+    /** Component #2 key.
+     * Switches to component video input #2. */
     AKEYCODE_TV_INPUT_COMPONENT_2 = 250,
+    /** VGA #1 key.
+     * Switches to VGA (analog RGB) input #1. */
     AKEYCODE_TV_INPUT_VGA_1  = 251,
+    /** Audio description key.
+     * Toggles audio description off / on. */
     AKEYCODE_TV_AUDIO_DESCRIPTION = 252,
+    /** Audio description mixing volume up key.
+     * Louden audio description volume as compared with normal audio volume. */
     AKEYCODE_TV_AUDIO_DESCRIPTION_MIX_UP = 253,
+    /** Audio description mixing volume down key.
+     * Lessen audio description volume as compared with normal audio volume. */
     AKEYCODE_TV_AUDIO_DESCRIPTION_MIX_DOWN = 254,
+    /** Zoom mode key.
+     * Changes Zoom mode (Normal, Full, Zoom, Wide-zoom, etc.) */
     AKEYCODE_TV_ZOOM_MODE    = 255,
+    /** Contents menu key.
+     * Goes to the title list. Corresponds to Contents Menu (0x0B) of CEC User Control
+     * Code */
     AKEYCODE_TV_CONTENTS_MENU = 256,
+    /** Media context menu key.
+     * Goes to the context menu of media contents. Corresponds to Media Context-sensitive
+     * Menu (0x11) of CEC User Control Code. */
     AKEYCODE_TV_MEDIA_CONTEXT_MENU = 257,
+    /** Timer programming key.
+     * Goes to the timer recording menu. Corresponds to Timer Programming (0x54) of
+     * CEC User Control Code. */
     AKEYCODE_TV_TIMER_PROGRAMMING = 258,
+    /** Help key. */
     AKEYCODE_HELP            = 259
 
     // NOTE: If you add a new keycode here you must also add it to several other files.
@@ -313,3 +729,5 @@
 #endif
 
 #endif // _ANDROID_KEYCODES_H
+
+/** @} */