text: #include QMK_KEYBOARD_H
  
  
  // Each layer gets a name for readability, which is then used in the keymap matrix below.
  // The underscores don't mean anything - you can have a layer called STUFF or any other name.
  // Layer names don't all need to be of the same length, obviously, and you can also skip them
  // entirely and just use numbers.
  #define _QWERTY 0
  #define _LOWER 1
  #define _RAISE 2
  #define _ADJUST 16
  
  enum custom_keycodes {
    QWERTY = SAFE_RANGE,
    LOWER,
    RAISE,
    ADJUST,
  };
  
  // Defines for task manager and such
  #define CALTDEL LCTL(LALT(KC_DEL))
  #define TSKMGR LCTL(LSFT(KC_ESC))
  
  const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  
  /* Qwerty
   *
   * ,----------------------------------.           ,----------------------------------.
   * |   Q  |   W  |   E  |   R  |   T  |           |   Y  |   U  |   I  |   O  |   P  |
   * |------+------+------+------+------|           |------+------+------+------+------|
   * |   A  |   S  |   D  |   F  |   G  |           |   H  |   J  |   K  |   L  |   ;  |
   * |------+------+------+------+------|           |------+------+------+------+------|
   * |   Z  |   X  |   C  |   V  |   B  |           |   N  |   M  |   ,  |   .  |   /  |
   * `----------------------------------'           `----------------------------------'
   *                  ,--------------------.    ,------,-------------.
   *                  | Ctrl | LOWER|      |    |      | RAISE| Shift|
   *                  `-------------| Space|    |BckSpc|------+------.
   *                                |      |    |      |
   *                                `------'    `------'
   */
  [_QWERTY] = LAYOUT_split_3x5_3( \
    KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,         KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    \
    KC_A,    KC_S,    KC_D,    KC_F,    KC_G,         KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, \
    KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,         KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, \
                      KC_LCTL, LOWER, KC_SPC,         KC_BSPC, RAISE, OSM(MOD_LSFT)                 \
  ),
  
  /* Raise
   *
   * ,----------------------------------.           ,----------------------------------.
   * |   1  |   2  |   3  |   4  |   5  |           |   6  |   7  |   8  |   9  |   0  |
   * |------+------+------+------+------|           |------+------+------+------+------|
   * |  Tab | Left | Down |  Up  | Right|           |      |   -  |   =  |   [  |   ]  |
   * |------+------+------+------+------|           |------+------+------+------+------|
   * |  Ctrl|   `  |  GUI |  Alt |      |           |      |      |      |   \  |   '  |
   * `----------------------------------'           `----------------------------------'
   *                  ,--------------------.    ,------,-------------.
   *                  |      | LOWER|      |    |      | RAISE|      |
   *                  `-------------|      |    |      |------+------.
   *                                |      |    |      |
   *                                `------'    `------'
   */
  [_RAISE] = LAYOUT_split_3x5_3( \
    KC_1,    KC_2,    KC_3,    KC_4,    KC_5,         KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    \
    KC_TAB,    KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT,      _______, KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, \
    KC_LCTL, KC_GRV,  KC_LGUI, KC_LALT, _______,      _______, _______, _______, KC_BSLS,  KC_QUOT, \
                      _______, _______, _______,      _______, _______, _______                    \
  ),
  
  /* Lower
   *
   * ,----------------------------------.           ,----------------------------------.
   * |   !  |   @  |   #  |   $  |   %  |           |   ^  |   &  |   *  |   (  |   )  |
   * |------+------+------+------+------|           |------+------+------+------+------|
   * |  Esc |      |      |      |      |           |      |   _  |   +  |   {  |   }  |
   * |------+------+------+------+------|           |------+------+------+------+------|
   * |  Caps|   ~  |      |      |      |           |      |      |      |   |  |   "  |
   * `----------------------------------'           `----------------------------------'
   *                  ,--------------------.    ,------,-------------.
   *                  |      | LOWER|      |    |      | RAISE|  Del |
   *                  `-------------|      |    | Enter|------+------.
   *                                |      |    |      |
   *                                `------'    `------'
   */
  [_LOWER] = LAYOUT_split_3x5_3( \
    KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC,      KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, \
    KC_ESC,  _______, _______, _______, _______,      _______, KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, \
    KC_CAPS, KC_TILD, _______, _______, _______,      _______, _______, _______, KC_PIPE,  KC_DQT, \
                      _______, _______, _______,      KC_ENT,  _______, KC_DEL                    \
  ),
  
  /* Adjust (Lower + Raise)
   *
   * ,----------------------------------.           ,----------------------------------.
   * |  F1  |  F2  |  F3  |  F4  |  F5  |           |   F6 |  F7  |  F8  |  F9  |  F10 |
   * |------+------+------+------+------|           |------+------+------+------+------|
   * |  F11 |  F12 |      |      |      |           |      |      |      |Taskmg|caltde|
   * |------+------+------+------+------|           |------+------+------+------+------|
   * | Reset|      |      |      |      |           |      |      |      |      |      |
   * `----------------------------------'           `----------------------------------'
   *                  ,--------------------.    ,------,-------------.
   *                  |      | LOWER|      |    |      | RAISE|      |
   *                  `-------------|      |    |      |------+------.
   *                                |      |    |      |
   *                                `------'    `------'
   */
  [_ADJUST] =  LAYOUT_split_3x5_3( \
    KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,        KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10, \
    KC_F11,  KC_F12,  _______, _______, _______,      _______, _______, _______, TSKMGR, CALTDEL, \
    RESET,   _______, _______, _______, _______,      _______, _______, _______, _______,  _______, \
                      _______, _______, _______,      _______,  _______, _______                    \
  )
  };
  
  void persistant_default_layer_set(uint16_t default_layer) {
    eeconfig_update_default_layer(default_layer);
    default_layer_set(default_layer);
  }
  
  bool process_record_user(uint16_t keycode, keyrecord_t *record) {
    switch (keycode) {
      case QWERTY:
        if (record->event.pressed) {
          #ifdef AUDIO_ENABLE
            PLAY_SONG(tone_qwerty);
          #endif
          persistant_default_layer_set(1UL<<_QWERTY);
        }
        return false;
        break;
      case LOWER:
        if (record->event.pressed) {
          layer_on(_LOWER);
          update_tri_layer(_LOWER, _RAISE, _ADJUST);
        } else {
          layer_off(_LOWER);
          update_tri_layer(_LOWER, _RAISE, _ADJUST);
        }
        return false;
        break;
      case RAISE:
        if (record->event.pressed) {
          layer_on(_RAISE);
          update_tri_layer(_LOWER, _RAISE, _ADJUST);
        } else {
          layer_off(_RAISE);
          update_tri_layer(_LOWER, _RAISE, _ADJUST);
        }
        return false;
        break;
      case ADJUST:
        if (record->event.pressed) {
          layer_on(_ADJUST);
        } else {
          layer_off(_ADJUST);
        }
        return false;
        break;
    }
    return true;
  }
  