+Many of existent projects offer keymap framework to define your own keymap easily. The following will explain how you can define keymap using this framework.
+ Instead, you can also implement your own `keymap_get_action()` to return action code for each key if you want.
+
+This is keymap example for [HHKB](http://en.wikipedia.org/wiki/Happy_Hacking_Keyboard) keyboard. Keyamp is defined in `keymaps[]` array.
+
+ static const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+ /* Layer 0: Default Layer
+ * ,-----------------------------------------------------------.
+ * |Esc| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =| \| `|
+ * |-----------------------------------------------------------|
+ * |Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]|Backs|
+ * |-----------------------------------------------------------|
+ * |Contro| A| S| D| F| G| H| J| K| L| ;| '|Enter |
+ * |-----------------------------------------------------------|
+ * |Shift | Z| X| C| V| B| N| M| ,| .| /|Shift |Fn1|
+ * `-----------------------------------------------------------'
+ * |Gui|Alt |Space |Alt |Fn2|
+ * `-------------------------------------------'
+ */
+ KEYMAP(ESC, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, MINS,EQL, BSLS,GRV, \
+ TAB, Q, W, E, R, T, Y, U, I, O, P, LBRC,RBRC,BSPC, \
+ LCTL,A, S, D, F, G, H, J, K, L, FN2, QUOT,ENT, \
+ LSFT,Z, X, C, V, B, N, M, COMM,DOT, SLSH,RSFT,FN1, \
+ LGUI,LALT, SPC, RALT,FN3),
+
+ /* Layer 1: HHKB mode (HHKB Fn)
+ * ,-----------------------------------------------------------.
+ * |Pwr| F1| F2| F3| F4| F5| F6| F7| F8| F9|F10|F11|F12|Ins|Del|
+ * |-----------------------------------------------------------|
+ * |Caps | | | | | | | |Psc|Slk|Pus|Up | |Backs|
+ * |-----------------------------------------------------------|
+ * |Contro|VoD|VoU|Mut| | | *| /|Hom|PgU|Lef|Rig|Enter |
+ * |-----------------------------------------------------------|
+ * |Shift | | | | | | +| -|End|PgD|Dow|Shift |Fn1|
+ * `-----------------------------------------------------------'
+ * |Gui |Alt |Space |Alt |Gui|
+ * `--------------------------------------------'
+ */
+ KEYMAP(PWR, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, INS, DEL, \
+ CAPS,NO, NO, NO, NO, NO, NO, NO, PSCR,SLCK,PAUS,UP, NO, BSPC, \
+ LCTL,VOLD,VOLU,MUTE,NO, NO, PAST,PSLS,HOME,PGUP,LEFT,RGHT,ENT, \
+ LSFT,NO, NO, NO, NO, NO, PPLS,PMNS,END, PGDN,DOWN,RSFT,FN0, \
+ LGUI,LALT, SPC, RALT,RGUI),
+ /* Layer 2: Mouse mode (Semicolon)
+ * ,-----------------------------------------------------------.
+ * |Esc| F1| F2| F3| F4| F5| F6| F7| F8| F9|F10|F11|F12|Ins|Del|
+ * |-----------------------------------------------------------|
+ * |Tab | | | | | |MwL|MwD|MwU|MwR| | | |Backs|
+ * |-----------------------------------------------------------|
+ * |Contro| | | | | |McL|McD|McU|McR|Fn0| |Return |
+ * |-----------------------------------------------------------|
+ * |Shift | | | | |Mb3|Mb2|Mb1|Mb4|Mb5| |Shift | |
+ * `-----------------------------------------------------------'
+ * |Gui |Alt |Mb1 |Alt |Fn0|
+ * `--------------------------------------------'
+ * Mc: Mouse Cursor / Mb: Mouse Button / Mw: Mouse Wheel
+ */
+ KEYMAP(ESC, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, INS, DEL, \
+ TAB, NO, NO, NO, NO, NO, WH_L,WH_D,WH_U,WH_R,NO, NO, NO, BSPC, \
+ LCTL,NO, ACL0,ACL1,ACL2,NO, MS_L,MS_D,MS_U,MS_R,FN0, QUOT,ENT, \
+ LSFT,NO, NO, NO, NO, BTN3,BTN2,BTN1,BTN4,BTN5,SLSH,RSFT,NO, \
+ LGUI,LALT, BTN1, RALT,FN0),
+ };