diff --git a/docs/tutorial/domainname.rst b/docs/tutorial/domainname.rst
index 8d0668e67..01a48baeb 100644
--- a/docs/tutorial/domainname.rst
+++ b/docs/tutorial/domainname.rst
@@ -1,4 +1,4 @@
-A variable with type `domainname`
+The `domainname` and `port` types
 ==================================
 
 .. objectives:: Objectives
@@ -25,7 +25,7 @@ A variable with type `domainname`
 
 .. type-along:: let's recap how far we've come
 
-We have an `http_proxy` family with an `address` variable
+We have an `http_proxy` family with an `address` variable.
 
 .. extinclude:: https://forge.cloud.silique.fr/stove/rougail-tutorials/raw/tag/v1.1_030/firefox/10-manual.yml
    :language: yaml
@@ -40,6 +40,9 @@ We have an `http_proxy` family with an `address` variable
 
 :tutorial:`Download this file from the rougail-tutorials git repository <src/tag/v1.1_030/firefox/10-manual.yml>`
 
+A variable with type `domainname`
+-----------------------------------
+
 And we have assigned a type to this variable:
 
 .. code-block:: yaml
@@ -178,7 +181,7 @@ we then have this output:
 
    OK I agree with the `domainname` type, but what if I want to specify 
    an IP address as a user value for this `address` variable?
-   Because it is therefore simply impossible to do so.
+   Because it is therefore simply impossible to do so now.
    
    Is there a way for my `address` variable to accept an IP address?
 
@@ -220,15 +223,63 @@ The params allow the domain name `address` variable to be set with IPs.
 
    parameter
    
-       A parameter is a property of a variable that can refine its behavior
+       A parameter is a property of a variable that can refine its behavior. 
+       It is declared by adding the `params` attribute in the variable's 
+       definition.
+
+Now we will test with an IP address as the value for our `address` variable.
+
+.. type-along:: For those who follow the tutorial with the help of the git repository
+
+    Now you need to checkout the `v1.1_031` version::
+     
+          git checkout v1.1_031
+
+
+.. extinclude:: https://forge.cloud.silique.fr/stove/rougail-tutorials/raw/tag/v1.1_031/config/02/config.yml
+   :language: yaml
+   :caption: An IP address as a value
+
+.. 
+    ---
+    manual:
+      http_proxy:
+        address: 192.168.0.1
+
+:tutorial:`Download this file from the rougail-tutorials git repository <src/tag/v1.1_031/config/02/config.yml>`
+
+if we launch the rougail CLI on it:
+
+.. raw:: html
+   :url: https://forge.cloud.silique.fr/stove/rougail-tutorials/raw/tag/v1.1_031/config/02/cmd_ro.txt
+   :class: terminal
+
+..
+    rougail -m firefox/ -u yaml -yf config/02/config.yml
+
+We have this output: 
+
+.. raw:: html
+   :url: https://forge.cloud.silique.fr/stove/rougail-tutorials/raw/tag/v1.1_030/config/01/output_ro.html
+   :class: output
+
+We can see that the IP address value has been accepted.
+
+A variable with type `port`
+------------------------------
+
+We will add, according to our use case, a variable of type `port`:
+
+.. image:: images/firefox_port.png
+
+
+
 
 
 .. keypoints:: let's review the key points
 
     **Keywords**
     
-    - we can add :term:`parameter`\ s to variables to refine their behavior
+    - we can set a `domainname` type to a variable
+    - we can add :term:`parameter`\ s to variables to refine their typing behavior
     
-    **Progress**
-
-    FIXME
diff --git a/docs/tutorial/images/firefox_port.png b/docs/tutorial/images/firefox_port.png
new file mode 100644
index 000000000..70583c3a4
Binary files /dev/null and b/docs/tutorial/images/firefox_port.png differ