kmk_firmware/docs/modtap.md
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# ModTap Keycodes
Enabling ModTap will give you access to the following keycodes and can simply be
added to the modules list.
```python
from kmk.modules.modtap import ModTap
modtap = ModTap()
# optional: set a custom tap timeout in ms
# modtap.tap_time = 300
keyboard.modules.append(modtap)
```
## Keycodes
|New Keycode | Description |
|---------------------------------------------------------|-----------------------------------------------------------------|
|`LCTL = KC.MT(KC.SOMETHING, KC.LCTRL)` |`LCTRL` if held `kc` if tapped |
|`LSFT = KC.MT(KC.SOMETHING, KC.LSFT)` |`LSHIFT` if held `kc` if tapped |
|`LALT = KC.MT(KC.SOMETHING, KC.LALT)` |`LALT` if held `kc` if tapped |
|`LGUI = KC.MT(KC.SOMETHING, KC.LGUI)` |`LGUI` if held `kc` if tapped |
|`RCTL = KC.MT(KC.SOMETHING, KC.RCTRL)` |`RCTRL` if held `kc` if tapped |
|`RSFT = KC.MT(KC.SOMETHING, KC.RSFT)` |`RSHIFT` if held `kc` if tapped |
|`RALT = KC.MT(KC.SOMETHING, KC.RALT)` |`RALT` if held `kc` if tapped |
|`RGUI = KC.MT(KC.SOMETHING, KC.RGUI)` |`RGUI` if held `kc` if tapped |
|`SGUI = KC.MT(KC.SOMETHING, KC.LSHFT(KC.LGUI))` |`LSHIFT` and `LGUI` if held `kc` if tapped |
|`LCA = KC.MT(KC.SOMETHING, KC.LCTRL(KC.LALT))` |`LCTRL` and `LALT` if held `kc` if tapped |
|`LCAG = KC.MT(KC.SOMETHING, KC.LCTRL(KC.LALT(KC.LGUI)))` |`LCTRL` and `LALT` and `LGUI` if held `kc` if tapped |
|`MEH = KC.MT(KC.SOMETHING, KC.LCTRL(KC.LSFT(KC.LALT)))` |`CTRL` and `LSHIFT` and `LALT` if held `kc` if tapped |
|`HYPR = KC.MT(KC.SOMETHING, KC.HYPR)` |`LCTRL` and `LSHIFT` and `LALT` and `LGUI` if held `kc` if tapped|
## Custom HoldTap Behavior
The full ModTap signature is as follows:
```python
KC.MT(KC.TAP, KC.HOLD, prefer_hold=True, tap_interrupted=False, tap_time=None)
```
* `prefer_hold`: decides which keycode the ModTap key resolves to when another
key is pressed before the timeout finishes. When `True` the hold keycode is
chosen, the tap keycode when `False`.
* `tap_interrupted`: decides if the timeout will interrupt at the first other
key press/down, or after the first other key up/release. Set to `True` for
interrupt on release.
* `tap_time`: length of the tap timeout in milliseconds.
Each of these parameters can be set for every ModTap key individually.