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-## READ FIRST
-https://github.com/tmk/tmk_core/blob/master/doc/keymap.md
-
-## How to get keycode
-See [Keycodes](Keycodes). Keycodes are actually defined in [common/keycode.h](https://github.com/qmk/qmk_firmware/blob/master/tmk_core/common/keycode.h).
-
-## Sysrq key
-Use keycode for Print Screen(`KC_PSCREEN` or `KC_PSCR`) instead of `KC_SYSREQ`. Key combination of 'Alt + Print Screen' is recognized as 'System request'.
-
-See [issue #168](https://github.com/tmk/tmk_keyboard/issues/168) and
-- http://en.wikipedia.org/wiki/Magic_SysRq_key
-- http://en.wikipedia.org/wiki/System_request
-
-## Power key doesn't work
-Use `KC_PWR` instead of `KC_POWER` or vice versa.
-- `KC_PWR` works with Windows and Linux, not with OSX.
-- `KC_POWER` works with OSX and Linux, not with Windows.
-
-http://geekhack.org/index.php?topic=14290.msg1327264#msg1327264
-
-## Oneshot modifier
-Solves my personal 'the' problem. I often got 'the' or 'THe' wrongly instead of 'The'.  Oneshot Shift mitgates this for me.
-https://github.com/tmk/tmk_keyboard/issues/67
-
-## Modifier/Layer stuck
-Modifier keys or layers can be stuck unless layer switching is configured properly.
-For Modifier keys and layer actions you have to place `KC_TRANS` on same position of destination layer to  unregister the modifier key or return to previous layer on release event.
-
-- https://github.com/tmk/tmk_core/blob/master/doc/keymap.md#31-momentary-switching
-- http://geekhack.org/index.php?topic=57008.msg1492604#msg1492604
-- https://github.com/tmk/tmk_keyboard/issues/248
-
-
-## Mechanical Lock Switch Support
-https://github.com/tmk/tmk_keyboard#mechanical-locking-support
-
-This feature is for *mechanical lock switch* like this Alps one.
-http://deskthority.net/wiki/Alps_SKCL_Lock
-
-Using enabling this feature and using keycodes `LCAP`, `LNUM` or `LSCR` in keymap you can use physical locking CapsLock, NumLock or ScrollLock keys as you expected.
-
-Old vintage mechanical keyboards occasionally have lock switches but modern ones don't have. ***You don't need this feature in most case and just use keycodes `CAPS`, `NLCK` and `SLCK`.***
-
-
-## Input special charactors other than ASCII like Cédille 'Ç'
-NO UNIVERSAL METHOD TO INPUT THOSE WORKS OVER ALL SYSTEMS. You have to define **MACRO** in way specific to your OS or layout.
-
-See this post for example **MACRO** code.
-
-http://deskthority.net/workshop-f7/tmk-keyboard-firmware-collection-t4478-120.html#p195620
-
-On **Windows** you can use `AltGr` key or **Alt code**.
-- http://en.wikipedia.org/wiki/AltGr_key
-- http://en.wikipedia.org/wiki/Alt_code
-
-On **Mac** OS defines `Option` key combinations.
-- http://en.wikipedia.org/wiki/Option_key#Alternative_keyboard_input
-
-On **Xorg** you can use `compose` key, instead.
-- http://en.wikipedia.org/wiki/Compose_key
-
-And see this for **Unicode** input.
-- http://en.wikipedia.org/wiki/Unicode_input
-
-
-## Apple/Mac keyboard Fn
-Not supported.
-
-Apple/Mac keyboard sends keycode for Fn unlike most of other keyboards.
-I think you can send Apple Fn key using Apple venter specific Page 0xff01 and usage 0x0003. But you have to change HID Report Descriptor for this, of course.
-
-https://opensource.apple.com/source/IOHIDFamily/IOHIDFamily-606.1.7/IOHIDFamily/AppleHIDUsageTables.h
-
-
-## Media control keys in Mac OSX
-#### KC_MNXT and KC_MPRV does not work on Mac
-Use `KC_MFFD`(`KC_MEDIA_FAST_FORWARD`) and `KC_MRWD`(`KC_MEDIA_REWIND`) instead of `KC_MNXT` and `KC_MPRV`.
-See https://github.com/tmk/tmk_keyboard/issues/195
-
-
-## Keys supported in Mac OSX?
-You can know which keycodes are supported in OSX from this source code.
-
-`usb_2_adb_keymap` array maps Keyboard/Keypad Page usages to ADB scancodes(OSX internal keycodes).
-
-https://opensource.apple.com/source/IOHIDFamily/IOHIDFamily-606.1.7/IOHIDFamily/Cosmo_USB2ADB.c
-
-And `IOHIDConsumer::dispatchConsumerEvent` handles Consumer page usages.
-
-https://opensource.apple.com/source/IOHIDFamily/IOHIDFamily-606.1.7/IOHIDFamily/IOHIDConsumer.cpp
-
-
-## JIS keys in Mac OSX
-Japanese JIS keyboard specific keys like `無変換(Muhenkan)`, `変換(Henkan)`, `ひらがな(hiragana)` are not recognized on OSX. You can use **Seil** to enable those keys, try following options.
-
-* Enable NFER Key on PC keyboard
-* Enable XFER Key on PC keyboard
-* Enable KATAKANA Key on PC keyboard
-
-https://pqrs.org/osx/karabiner/seil.html
-
-
-## RN-42 Bluetooth doesn't work with Karabiner
-Karabiner - Keymapping tool on Mac OSX - ignores inputs from RN-42 module by default. You have to enable this option to make Karabiner working with your keyboard.
-https://github.com/tekezo/Karabiner/issues/403#issuecomment-102559237
-
-See these for the deail of this problem.
-https://github.com/tmk/tmk_keyboard/issues/213
-https://github.com/tekezo/Karabiner/issues/403
-
-
-## Esc and `~ on a key
-
-You can define FC660 and Poker style ESC with `ACTION_LAYER_MODS`.
-https://github.com/tmk/tmk_core/blob/master/doc/keymap.md#35-momentary-switching-with-modifiers
-
-```
-#include "keymap_common.h"
-
-
-/* Leopold FC660
- * https://elitekeyboards.com/products.php?sub=leopold,compact&pid=fc660c
- * Shift + Esc = ~
- * Fn    + Esc = `
- *
- * Votex Poker II
- * https://adprice.fedorapeople.org/poker2_manual.pdf
- * Fn         + Esc = `
- * Fn + Shift + Esc = ~
- */
-const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-    /* 0: qwerty */
-    [0] = KEYMAP( \
-        ESC, 1,   2,   3,   4,   5,   6,   7,   8,   9,   0,   MINS,EQL, NUHS,BSPC, \
-        TAB, Q,   W,   E,   R,   T,   Y,   U,   I,   O,   P,   LBRC,RBRC,BSLS, \
-        LCTL,A,   S,   D,   F,   G,   H,   J,   K,   L,   SCLN,QUOT,ENT,  \
-        FN0, NUBS,Z,   X,   C,   V,   B,   N,   M,   COMM,DOT, SLSH,RSFT,ESC, \
-        LCTL,LGUI,LALT,          SPC,                     RALT,FN1, RGUI,RCTL),
-    [1] = KEYMAP( \
-        GRV, TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS, \
-        TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,\
-        TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS, \
-        TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS, \
-        TRNS,TRNS,TRNS,          TRNS,                    TRNS,TRNS,TRNS,TRNS),
-    [2] = KEYMAP( \
-        GRV, F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9,  F10, F11, F12, TRNS,TRNS, \
-        TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,\
-        TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS, \
-        TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS, \
-        TRNS,TRNS,TRNS,          TRNS,                    TRNS,TRNS,TRNS,TRNS),
-};
-
-const uint16_t PROGMEM fn_actions[] = {
-    // https://github.com/tmk/tmk_core/blob/master/doc/keymap.md#35-momentary-switching-with-modifiers
-    [0] = ACTION_LAYER_MODS(1, MOD_LSFT),
-    [1] = ACTION_LAYER_MOMENTARY(2),
-};
-```
-
-Otherwise, you can write code, see this.
-https://github.com/p3lim/keyboard_firmware/commit/fd799c12b69a5ab5addd1d4c03380a1b8ef8e9dc
-
-
-## 32 Fn keys are not enough?
-### actionmap
-It uses 16 bit codes and has no limitation of 32 Fn at the expense of memory space. TMK keymap is actually is 8 bit codes as subset of the actionmap.
-https://github.com/tmk/tmk_keyboard/issues?utf8=%E2%9C%93&q=is%3Aissue+actionmap
-
-### extension for modified keys
-https://geekhack.org/index.php?topic=41989.msg1885526#msg1885526
-
-
-## Arrow on Right Modifier keys with Dual-Role
-This turns right modifer keys into arrow keys when the keys are tapped while still modifiers when the keys are hold. In TMK the dual-role function is dubbed **TAP**.
-```
-#include "keymap_common.h"
-
-
-/* Arrow keys on right modifier keys with TMK dual role feature
- *
- *  https://github.com/tmk/tmk_core/blob/master/doc/keymap.md#213-modifier-with-tap-keydual-role
- *  https://en.wikipedia.org/wiki/Modifier_key#Dual-role_keys
- */
-const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
-    /* 0: qwerty */
-    [0] = KEYMAP( \
-        ESC, 1,   2,   3,   4,   5,   6,   7,   8,   9,   0,   MINS,EQL, NUHS,BSPC, \
-        TAB, Q,   W,   E,   R,   T,   Y,   U,   I,   O,   P,   LBRC,RBRC,BSLS, \
-        LCTL,A,   S,   D,   F,   G,   H,   J,   K,   L,   SCLN,QUOT,ENT,  \
-        LSFT,NUBS,Z,   X,   C,   V,   B,   N,   M,   COMM,DOT, SLSH,FN0, ESC, \
-        FN4, LGUI,LALT,          SPC,                     APP, FN2, FN1, FN3),
-    [1] = KEYMAP( \
-        GRV, F1,  F2,  F3,  F4,  F5,  F6,  F7,  F8,  F9,  F10, F11, F12, TRNS,TRNS, \
-        TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,\
-        TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS, \
-        TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,FN5, TRNS, \
-        TRNS,TRNS,TRNS,          TRNS,                    TRNS,FN7, FN6, FN8),
-};
-
-const uint16_t PROGMEM fn_actions[] = {
-    [0] = ACTION_MODS_TAP_KEY(MOD_RSFT, KC_UP),
-    [1] = ACTION_MODS_TAP_KEY(MOD_RGUI, KC_DOWN),
-    [2] = ACTION_MODS_TAP_KEY(MOD_RALT, KC_LEFT),
-    [3] = ACTION_MODS_TAP_KEY(MOD_RCTL, KC_RIGHT),
-    [4] = ACTION_LAYER_MOMENTARY(1),
-    [5] = ACTION_MODS_TAP_KEY(MOD_RSFT, KC_PGUP),
-    [6] = ACTION_MODS_TAP_KEY(MOD_RGUI, KC_PGDN),
-    [7] = ACTION_MODS_TAP_KEY(MOD_RALT, KC_HOME),
-    [8] = ACTION_MODS_TAP_KEY(MOD_RCTL, KC_END),
-};
-
-```
-
-
-Dual-role key: https://en.wikipedia.org/wiki/Modifier_key#Dual-role_keys
-
-
-## Eject on Mac OSX
-`EJCT` keycode works on OSX. https://github.com/tmk/tmk_keyboard/issues/250
-It seems Windows 10 ignores the code and Linux/Xorg recognizes but has no mapping by default.
-
-Not sure what keycode Eject is on genuine Apple keyboard actually. HHKB uses `F20` for Eject key(`Fn+f`) on Mac mode but this is not same as Apple Eject keycode probably.
-
-
-
-## What's weak_mods and real_mods in action_util.c
-___TO BE IMPROVED___
-
-real_mods is intended to retains state of real/physical modifier key state, while
-weak_mods retains state of virtual or temprary modifiers which should not affect state real modifier key.
-
-Let's say you hold down physical left shift key and type ACTION_MODS_KEY(LSHIFT, KC_A), 
-
-with weak_mods,
-* (1) hold down left shift: real_mods |= MOD_BIT(LSHIFT)
-* (2) press ACTION_MODS_KEY(LSHIFT, KC_A): weak_mods |= MOD_BIT(LSHIFT)
-* (3) release ACTION_MODS_KEY(LSHIFT, KC_A): waek_mods &= ~MOD_BIT(LSHIFT)
-real_mods still keeps modifier state.
-
-without weak mods,
-* (1) hold down left shift: real_mods |= MOD_BIT(LSHIFT)
-* (2) press ACTION_MODS_KEY(LSHIFT, KC_A): real_mods |= MOD_BIT(LSHIFT)
-* (3) release ACTION_MODS_KEY(LSHIFT, KC_A): real_mods &= ~MOD_BIT(LSHIFT)
-here real_mods lost state for 'physical left shift'.
-
-weak_mods is ORed with real_mods when keyboard report is sent.
-https://github.com/tmk/tmk_core/blob/master/common/action_util.c#L57
-
-## Timer functionality
-
-It's possible to start timers and read values for time-specific events - here's an example:
-
-```c
-static uint16_t key_timer;
-key_timer = timer_read();
-
-if (timer_elapsed(key_timer) < 100) {
-  // do something if less than 100ms have passed
-} else {
-  // do something if 100ms or more have passed
-}
-```
-
-It's best to declare the `static uint16_t key_timer;` at the top of the file, outside of any code blocks you're using it in.
-