1 files changed, 9 insertions, 1 deletions
diff --git a/README.md b/README.md
index 3110a6f..c8fc771 100644
--- a/README.md
+++ b/README.md
@@ -89,7 +89,7 @@ An exercise is defined by 4 simple parts:
 * **Solution** code, being a correct solution to the exercise
 * **Validation** code that tests the correctness of the user's input
 
-Exercises need to start and finish with a separation bar (```---``` or ```***```). It should contain 3 code elements (**base**, **solution** and **validation**).
+Exercises need to start and finish with a separation bar (```---``` or ```***```). It should contain 3 code elements (**base**, **solution** and **validation**). It can contain a 4th element that provides **context** code (functions, imports of libraries etc ... that shouldn't be displayed to the user).
 
     ---
 
@@ -107,6 +107,14 @@ Exercises need to start and finish with a separation bar (```---``` or ```***```
     assert(x == 10);
     ```
 
+    ```js
+    // This is context code available everywhere
+    // The user will be able to call magicFunc in his code
+    function magicFunc() {
+        return 3;
+    }
+    ```
+
     ---
 
 #### Multi-Languages