{"version": 1, "uid": 4882409417170782975, "layout": [[["KC_TAB", "KC_Q", "KC_W", "KC_E", "KC_R", "KC_T"], ["KC_LCTRL", "KC_A", "KC_S", "KC_D", "KC_F", "KC_G"], ["KC ...

In QMK, const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] holds multiple layers of keymap information in 16 bit data holding the action code. You can define 32 layers at most. For trivial key ...