diff --git a/README.md b/README.md
index fff3630..1572982 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,10 @@
 # FDF - fil de fer
 
-this program is written in C
+![example 3D of map after modifications](assets/fdf_loop_flying_tube.jpg)
 
-this is an exercize to discover 3D drawing, keyboard events, and pixel images manipulation
+**this is an exercize to discover 3D drawing, keyboard events, and pixel images manipulation**
 
-what it does is to read a map, which is a simple text file like this one :
+it reads a map, which is a simple text file like this :
 
 ```
 0  0  0  0  0
@@ -14,10 +14,32 @@ what it does is to read a map, which is a simple text file like this one :
 0  0  0  0  0
 ```
 
-and it will convert it into a rectangular net, like a landscape with the height equal to the numbers :
+and it convert it into a rectangular net, like a landscape with the height equal to the numbers :
 
 ![example 3D of map before modification](assets/fdf_demo_1.jpg)
 
-if we modify the map it will modify the 3D drawing
+we can modify the map to change the 3D drawing :
 
 ![example 3D of map after modifications](assets/fdf_demo_2.jpg)
+
+then it listent to keyboards events to transform the 3D, like turning around, zooming... :
+
+**zoom :**
+
+![example 3D of map after modifications](assets/fdf_loop_zoom_element.jpg)
+
+**turn :**
+
+![example 3D of map after modifications](assets/fdf_loop_turn_left_pyramide.jpg)
+
+![example 3D of map after modifications](assets/fdf_loop_turn_down_pylone.jpg)
+
+**move :**
+
+![example 3D of map after modifications](assets/fdf_loop_move_left_tube.jpg)
+
+![example 3D of map after modifications](assets/fdf_loop_move_down_tube.jpg)
+
+**change height :**
+
+![example 3D of map after modifications](assets/fdf_loop_change_height.jpg)