You can then override any settings, rather than having to copy and paste the whole thing.
+### Prevent stuck modifiers
+
+Consider the following scenario:
+
+1. Layer 0 has a key defined as Shift.
+2. The same key is defined on layer 1 as the letter A.
+3. User presses Shift.
+4. User switches to layer 1 for whatever reason.
+5. User releases Shift, or rather the letter A.
+6. User switches back to layer 0.
+
+Shift was actually never released and is still considered pressed.
+
+If such situation bothers you add this to your `config.h`:
+
+ #define PREVENT_STUCK_MODIFIERS
+
+This option uses 5 bytes of memory per every 8 keys on the keyboard
+rounded up (5 bits per key). For example on Planck (48 keys) it uses
+(48/8)\*5 = 30 bytes.
+
# Going beyond the keycodes
Aside from the [basic keycodes](https://github.com/qmk/qmk_firmware/wiki/Keycodes), your keymap can include shortcuts to common operations.
`DF(layer)` - sets default layer to *layer*. The default layer is the one at the "bottom" of the layer stack - the ultimate fallback layer. This currently does not persist over power loss. When you plug the keyboard back in, layer 0 will always be the default. It is theoretically possible to work around that, but that's not what `DF` does.
-## Prevent stuck modifiers
-
-Consider the following scenario:
-
-1. Layer 0 has a key defined as Shift.
-2. The same key is defined on layer 1 as the letter A.
-3. User presses Shift.
-4. User switches to layer 1 for whatever reason.
-5. User releases Shift, or rather the letter A.
-6. User switches back to layer 0.
-
-Shift was actually never released and is still considered pressed.
-
-If such situation bothers you add this to your `config.h`:
-
- #define PREVENT_STUCK_MODIFIERS
-
-This option uses 5 bytes of memory per every 8 keys on the keyboard
-rounded up (5 bits per key). For example on Planck (48 keys) it uses
-(48/8)\*5 = 30 bytes.
-
## Macro shortcuts: Send a whole string when pressing just one key
Instead of using the `ACTION_MACRO` function, you can simply use `M(n)` to access macro *n* - *n* will get passed into the `action_get_macro` as the `id`, and you can use a switch statement to trigger it. This gets called on the keydown and keyup, so you'll need to use an if statement testing `record->event.pressed` (see keymap_default.c).