Layer Keys¶

The layers of a space cadet driver can be manipulated using these keys:

Key	Description
`TG(layer)`	Toggle a layer.
`MO(layer)`	Momentarily enable a layer until the key is released.
`AL(layer)`	Activate a layer.
`LT(layer,key,hold_duration_ms)`	Enable a layer when held; emit a key when tapped.
`OSL(layer)`	Temporarily enable a layer until the next key is pressed + released.

MACRO(...): A macro key is a collection of keys that are pressed and released in order when the physical key is released.
TG(LAYER): Toggle whether a LAYER is turned on or off.
MO(LAYER): Enable a LAYER when the key is pressed, then disable the LAYER when the key is released.
AL(LAYER):: Activate a LAYER.
OSL(LAYER):: Enable a LAYER when pressed. The layer is disabled after another key is pressed and released. QMK calls this a “one-shot-layer” - it allows you to perform temporary layer switching without having to hold down a key.
LT(LAYER,KEY,HOLD_DURATION_MS):: Emit a KEY when tapped (i.e. pressed and released quickly). Enable a LAYER when held for more than HOLD_DURATION_MS. The layer is disabled when the held key is released.