3 files changed, 16 insertions, 7 deletions
diff --git a/keyboards/atreus/keymaps/replicaJunction/atreus-replica-extend.png b/keyboards/atreus/keymaps/replicaJunction/atreus-replica-extend.png
index 8548543f05..fd8f0a6e2c 100644
--- a/keyboards/atreus/keymaps/replicaJunction/atreus-replica-extend.png
+++ b/keyboards/atreus/keymaps/replicaJunction/atreus-replica-extend.png
diff --git a/keyboards/atreus/keymaps/replicaJunction/keymap.c b/keyboards/atreus/keymaps/replicaJunction/keymap.c
index aa0e26fa42..0470a4fa19 100644
--- a/keyboards/atreus/keymaps/replicaJunction/keymap.c
+++ b/keyboards/atreus/keymaps/replicaJunction/keymap.c
@@ -1,10 +1,10 @@
 /*
  * Keyboard: Atreus
  * Keymap:   replicaJunction
- * Version:  0.1
+ * Version:  0.3
  *
  * This keymap is designed to complement my Ergodox keyboard layout, found in keyboards/ergodox_ez.
- * The Atreus keyboard is a 40% board whose design was heavily influenced by the Ergodox, and I now
+ * The Atreus keyboard is a 40% board whose design was heavily influenced by the Ergodox. I now
  * have both keyboards, so I've designed these layouts in an effort to make switching between the
  * two as easy as possible.
  *
@@ -37,6 +37,13 @@
 #define KCX_CS  LCTL(KC_LSFT)
 #define KCX_CSA LCTL(LSFT(KC_LALT))
 #define KCX_LST LSFT(KC_TAB)
+#define KX_COPY LCTL(KC_C)
+#define KX_CUT  LCTL(KC_X)
+#define KX_PAST LCTL(KC_V)
+#define KX_UNDO LCTL(KC_Z)
+
+// Uses 5 bytes of memory per 8 keys, but makes sure modifiers don't get "stuck" switching layers
+#define PREVENT_STUCK_MODIFIERS
 
 ; // This doesn't do anything. It's just for VSCode because its syntax highlighting is weird for the above #define statements.
 
@@ -57,9 +64,9 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
 [_EX] = KEYMAP( /* Extend */
   _______, _______, _______, _______, _______,                   KC_PGUP, KC_HOME, KC_UP,   KC_END,  KC_DEL,
-  KC_LGUI, KC_LALT, KC_LSFT, KC_LCTL, _______,                   KC_PGDN, KC_LEFT, KC_DOWN, KC_RGHT, KC_BSPC,
-  KC_HYPR, KCX_CSA, KCX_CA,  KCX_CS,  _______,                   _______, KCX_LST, _______, KC_TAB,  _______,
-  _______, _______, _______, _______, _______, _______, _______, KC_SPC,  _______, _______, _______, KC_PSCR
+  _______, KC_LGUI, KC_LALT, KC_LCTL, _______,                   KC_PGDN, KC_LEFT, KC_DOWN, KC_RGHT, KC_BSPC,
+  KX_UNDO, KX_CUT,  KX_COPY, _______, KX_PAST,                   _______, KCX_LST, _______, KC_TAB,  _______,
+  _______, _______, _______, _______, KC_LSFT, _______, _______, KC_SPC,  _______, _______, _______, KC_PSCR
 ),
 
 [_NU] = KEYMAP( /* Numbers and symbols */
diff --git a/keyboards/atreus/keymaps/replicaJunction/readme.md b/keyboards/atreus/keymaps/replicaJunction/readme.md
index 0e8950cd50..1b96926e44 100644
--- a/keyboards/atreus/keymaps/replicaJunction/readme.md
+++ b/keyboards/atreus/keymaps/replicaJunction/readme.md
@@ -24,9 +24,11 @@ There is still one blank key on this layout. I haven't decided what to use it fo
 
 This layout is designed primarily for keyboard navigation. Arrow keys are easily accessible under the right hand (a welcome change from the original Atreus layout, which places them under the left hand), along with Home/End and PgUp/PgDn.
 
-Modifiers are also placed under the home row of the left hand. One of the single keyboard actions I use most is Shift+Ctrl+Left/Right to select a whole word; this layer makes those keypresses simple by adding the Ctrl and Shift keys in easy-to-reach locations. In fact, I liked this idea so much that I added double modifiers in the row beneath it, so I can now press Ctrl+Shift with a single key instead of pressing both keys individually. Using this layer takes some practice to remember which modifiers are under which fingers, but it makes for much less awkward hand motions when using modifiers on a regular basis.
+Modifiers are also placed under the home row of the left hand. One of the single keyboard actions I use most is Shift+Ctrl+Left/Right to select a whole word; this layer makes those keypresses simple by adding the Ctrl and Shift keys in easy-to-reach locations.
 
-The Space key exists to prevent going from this layer directly into the Number layer.
+For the common Ctrl shortcuts, I also added some hotkeys to this layer over the letter keys they are associated with. This gives the Extend key some extra utility by letting it "feel" like a Ctrl key in some cases.
+
+The Space key exists to prevent going from this layer directly into the Number layer. Similarly, the Shift key on the left thumb helps make sure that the Backspace function doesn't fire (the other role of this key on the base layout).
 
 ## Number and Symbol Layer ##