diff --git a/la_chariotte/order/models.py b/la_chariotte/order/models.py
index b5fc867..0b72c1c 100644
--- a/la_chariotte/order/models.py
+++ b/la_chariotte/order/models.py
@@ -34,11 +34,16 @@ class GroupedOrder(models.Model):
         2. A random int written in base36 (5 digits long)
         3. Only the 6 first digits of this string
         The use of pk in the beginning of the string guarantees the uniqueness, and the random part makes that we cannot guess the url path.
+
+        We use this kind of code, that is small and can contain a large number of values, in order to keep it simple enough to be
+        manually written, so that people can share information about grouped orders more easily
         """
         base_36_pk = base36.dumps(self.pk)
+        # generate a 5 digits long string : the random int is between 11111[in base 36] and zzzzz[in base 36],
+        # which are the smallest and the biggest values with 5 digits
         random_string = base36.dumps(
             random.randint(pow(36, CODE_LENGTH - 2), pow(36, CODE_LENGTH - 1) - 1)
-        )  # generates a 5 digits long string
+        )
         self.code = f"{base_36_pk}{random_string}"[:CODE_LENGTH]
 
     def compute_total_price(self):