docs: add page about modifiers

docs/docs/codes/_keyboard-keypad.mdx

@@ -22,10 +22,6 @@ import Table from "@site/src/components/codes/Table";
 
 <Table group="keyboard-navigation" />
 
-### Modifiers
-
-<Table group="keyboard-modifiers" />
-
 ### Locks
 
 <Table group="keyboard-locks" />

docs/docs/codes/modifiers.mdx

@@ -0,0 +1,33 @@
+---
+title: Modifiers
+sidebar_label: Modifiers
+---
+
+import Table from "@site/src/components/codes/Table";
+
+To add a modifier key like 'Control' to your board, use one of the codes from the following table.
+
+If you want to send a modified key like ctrl+a, see the Modified keys section below.
+
+### Modifier keys
+
+<Table group="keyboard-modifiers" />
+
+### Modified keys
+
+To send a shifted key such as capital A (`LEFT_SHIFT` + `A`) use the `LS` macro: `&kp LS(A)`. You can also use the "right-hand" version of this macro, `RS`.
+
+Control (`LC`, `RC`), Alt (`LA`,`RA`) and GUI (`LG`,`RG`) can be used in the same way. For example, to send ctrl+c, use `&kp LC(C)` or `&kp RC(C)`.
+
+It's possible to combine modifiers: `&kp LC(RA(A))` will result in `LEFT_CONTROL` + `RIGHT_ALT` + `A` being pressed.
+
+| Macro | Corresponding keycode |
+| ----- | --------------------- |
+| `LS`  | `LEFT_SHIFT`          |
+| `RS`  | `RIGHT_SHIFT`         |
+| `LC`  | `LEFT_CONTROL`        |
+| `RC`  | `RIGHT_CONTROL`       |
+| `LA`  | `LEFT_ALT`            |
+| `RA`  | `RIGHT_ALT`           |
+| `LG`  | `LEFT_GUI`            |
+| `RG`  | `RIGHT_GUI`           |

docs/docs/feature/keymaps.md

@@ -135,7 +135,7 @@ that defines just one layer for this keymap:
 			bindings = <
     &kp ESC   &kp Q     &kp W    &kp E     &kp R     &kp T                                                 &kp Y     &kp U     &kp I     &kp O     &kp P    &kp BSLH
     &kp TAB   &kp A     &kp S    &kp D     &kp F     &kp G                                                 &kp H     &kp J     &kp K     &kp L     &kp SEMI &kp QUOTE
-    &kp LSHFT &kp Z     &kp X    &kp C     &kp V     &kp B      &kp LSHFT &kp LSHFT    &kp LSHFT &kp LSHFT &kp N     &kp M     &kp COMMA &kp DOT   &kp FSLH &kp RCTRL
+    &kp LSHFT &kp Z     &kp X    &kp C     &kp V     &kp B      &kp LC(A) &kp LC(C)    &kp LC(V) &kp LC(X) &kp N     &kp M     &kp COMMA &kp DOT   &kp FSLH &kp RCTRL
                                  &kp LGUI  &kp DEL   &kp RET    &kp SPACE &kp ESC      &kp RET   &kp SPACE &kp TAB   &kp BSPC  &kp RALT
 			>;
 
@@ -167,12 +167,12 @@ Putting this all together, a complete [`kyria.keymap`](https://github.com/zmkfir
 // --------------------------------------------------------------------------------------------------------------------------------------------------------------------
 // |   ESC   |    Q    |    W    |    E    |    R    |    T    |                                          |    Y    |    U    |    I    |    O    |    P    |    \    |
 // |   TAB   |    A    |    S    |    D    |    F    |    G    |                                          |    H    |    J    |    K    |    L    |    ;    |    '    |
-// |  SHIFT  |    Z    |    X    |    C    |    V    |    B    | L SHIFT | L SHIFT |  | L SHIFT | L SHIFT |    N    |    M    |    ,    |    .    |    /    |  R CTRL |
+// |  SHIFT  |    Z    |    X    |    C    |    V    |    B    | CTRL+A  | CTRL+C  |  |  CTRL+V |  CTRL+X |    N    |    M    |    ,    |    .    |    /    |  R CTRL |
 //                               |   GUI   |   DEL   | RETURN  |  SPACE  | ESCAPE  |  |  RETURN |  SPACE  |   TAB   |   BSPC  |  R ALT  |
 			bindings = <
     &kp ESC   &kp Q     &kp W    &kp E     &kp R     &kp T                                                 &kp Y     &kp U     &kp I     &kp O     &kp P    &kp BSLH
     &kp TAB   &kp A     &kp S    &kp D     &kp F     &kp G                                                 &kp H     &kp J     &kp K     &kp L     &kp SEMI &kp QUOTE
-    &kp LSHFT &kp Z     &kp X    &kp C     &kp V     &kp B      &kp LSHFT &kp LSHFT    &kp LSHFT &kp LSHFT &kp N     &kp M     &kp COMMA &kp DOT   &kp FSLH &kp RCTRL
+    &kp LSHFT &kp Z     &kp X    &kp C     &kp V     &kp B      &kp LC(A) &kp LC(C)    &kp LC(V) &kp LC(X) &kp N     &kp M     &kp COMMA &kp DOT   &kp FSLH &kp RCTRL
                                  &kp LGUI  &kp DEL   &kp RET    &kp SPACE &kp ESC      &kp RET   &kp SPACE &kp TAB   &kp BSPC  &kp RALT
 			>;
 

docs/sidebars.js

@@ -29,6 +29,7 @@ module.exports = {
     Codes: [
       "codes/index",
       "codes/keyboard-keypad",
+      "codes/modifiers",
       "codes/editing",
       "codes/media",
       "codes/applications",