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- # Space Cadet Shift: The Future, Built In
-
- Steve Losh described the [Space Cadet Shift](http://stevelosh.com/blog/2012/10/a-modern-space-cadet/) quite well. Essentially, when you tap Left Shift on its own, you get an opening parenthesis; tap Right Shift on its own and you get the closing one. When held, the Shift keys function as normal. Yes, it's as cool as it sounds.
-
- ## Usage
-
- Replace the Left Shift key in your keymap with `KC_LSPO` (Left Shift, Parenthesis Open), and Right Shift with `KC_RSPC` (Right Shift, Parenthesis Close).
-
- ## Keycodes
-
- |Keycode |Description |
- |---------|--------------------------------------|
- |`KC_LSPO`|Left Shift when held, `(` when tapped |
- |`KC_RSPC`|Right Shift when held, `)` when tapped|
-
- ## Caveats
-
- Space Cadet's functionality can conflict with the default Command functionality when both Shift keys are held at the same time. Make sure that Command is disabled in your `rules.mk` with:
-
- ```make
- COMMAND_ENABLE = no
- ```
-
- ## Configuration
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- By default Space Cadet assumes a US ANSI layout, but if your layout uses different keys for parentheses, you can redefine them in your `config.h`.
- You can also disable the rollover, allowing you to use the opposite Shift key to cancel the Space Cadet state in the event of an erroneous press, instead of emitting a pair of parentheses when the keys are released.
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- |Define |Default |Description |
- |------------------------------|-------------|------------------------------------------------------------|
- |`LSPO_KEY` |`KC_9` |The keycode to send when Left Shift is tapped |
- |`RSPC_KEY` |`KC_0` |The keycode to send when Right Shift is tapped |
- |`DISABLE_SPACE_CADET_ROLLOVER`|*Not defined*|If defined, use the opposite Shift key to cancel Space Cadet|
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