- ACTION_LMOD_KEY(KC_LSHIFT, KC_1)
- ACTION_LMOD_KEY(KC_LALT, KC_TAB)
+ ACTION_MODS_KEY(MOD_LSFT, KC_1)
+ ACTION_MODS_KEY(MOD_LALT, KC_TAB)
+
+Or `Alt,Shift + Tab` can be defined. `ACTION_MODS_KEY(mods, key)` requires **4-bit modifier state** and a **keycode** as arguments. See `keycode.h` for `MOD_BIT()` macro.
+
+ ACTION_MODS_KEY(MOD_LALT | MOD_LSFT, KC_TAB)
+
+#### 2.1.3 Multiple Modifiers
+Registers multiple modifiers with pressing a key. To specify multiple modifiers use `|`.
+
+ ACTION_MODS(MOD_ALT | MOD_LSFT)
+
+#### 2.1.3 Modifier with tap key
+Works as a modifier key while holding, but registers a key on tap(press and release quickly).