diff --git a/config/corne.keymap b/config/corne.keymap
index 305db0a..7e06c56 100644
--- a/config/corne.keymap
+++ b/config/corne.keymap
@@ -12,6 +12,7 @@
 #define DEFAULT     0
 #define SYMBOLE     1
 #define NAVIGATION  2
+#define FUNCTION    3
 
 /* ================
  * MACRO DEFINITION
@@ -29,6 +30,16 @@
     };
 };
 
+/* ====================
+ * MOD TAP MODIFICATION
+ * ====================
+ */  
+
+
+&mt {
+    tapping-term-ms = <400>;
+};
+
 
 
 /* =================
@@ -42,15 +53,15 @@
 
                 DEFAULT {
 // -----------------------------------------------------------------------------------------
-// |  - _ |  Q  |  W  |  F  |  P  |  Bootloader (B)  |   |  J  |  L   |  U  |  Y  |  ;  |  + = |
-// | TAB  |  A  |  R  |  S  |  T  |  G  |   |  M  |  N   |  E  |  I  |  O  |  GUI |
-// | ESC  |  Z  |  X  |  C  |  D  |  V  |   |  K  |  H   |  ,< |  .> |  /? |  ~ ` |
-//                    | ENT | SPC | BCK |   | SYM | SHFT | '"  |
+// |  - _  |  Q  |  W  |  F  |  P  |  Bootloader (B)  |  J  |  L   |  U  |  Y  |  ;  |  + = |
+// | TAB   |  A  |  R  |  S  |  T  |  G  |            |  M  |  N   |  E  |  I  |  O  |  GUI |
+// |ESC/DEL|  Z  |  X  |  C  |  D  |  V  |            |  K  |  H   |  ,< |  .> |  /? |  ~ ` |
+//                    | ENT | SPC | BCK |             | SYM | SHFT | '"  |
                         bindings = <
-   &kp MINUS &kp Q &kp W &kp F &kp P &bootloader   &kp J &kp L  &kp U     &kp Y   &kp SEMI &kp EQUAL
-   &kp TAB   &kp A &kp R &kp S &kp T &kp G   &kp M &kp N  &kp E     &kp I   &kp O    &kp SQT
-   &kp ESC   &kp Z &kp X &kp C &kp D &kp V   &kp K &kp H  &kp COMMA &kp DOT &kp FSLH &kp GRAVE
-              &kp RET &lt 2 SPACE &kp BSPC   &mo 1 &kp LSHFT &kp SQT
+   &kp MINUS   &kp Q &kp W &kp F &kp P &bootloader   &kp J &kp L     &kp U     &kp Y   &kp SEMI &kp EQUAL
+   &kp TAB     &kp A &kp R &kp S &kp T &kp G         &kp M &kp N     &kp E     &kp I   &kp O    &kp LGUI
+   &mt DEL ESC &kp Z &kp X &kp C &kp D &kp V         &kp K &kp H     &kp COMMA &kp DOT &kp FSLH &kp GRAVE
+                   &kp RET &lt 2 SPACE &kp BSPC      &mo 1 &kp LSHFT &lt 3 SQT
                         >;
                 };
                 SYMBOLE {
@@ -80,6 +91,20 @@
                                      &none      &none         &none           &none &none        &none           
                         >;
                 };
+
+                FUNCTION {
+// -----------------------------------------------------------------------------------------
+// |      |  F1 |  F2 |  F3 | F4  |     |                |     |     |     |     |     |      |
+// |      |  F5 |  F6 |  F7 | F8  |     |                |     |     | ALT |     |     | GUI  |
+// |      |  F9 | F10 | F11 | F12 |     |                |     |     |     |     |     |      |
+//                    | CTRL|     |     |                |     | SHFT|     |
+                        bindings = <
+   &none &kp F1 &kp F2  &kp F3  &kp F4    &none              &none &none     &none    &none &none &none
+   &none &kp F5 &kp F6  &kp F7  &kp F8    &none              &none &none     &kp LALT &none &none &kp LGUI
+   &none &kp F9 &kp F10 &kp F11 &kp F12   &none              &none &none     &none    &none &none &none
+                        &kp LCTRL &none   &none              &none &kp LSHFT &none 
+                        >;
+                };
         };
 };