diff --git a/docs/tutorial/preliminary.rst b/docs/tutorial/preliminary.rst
index fb7603768..d1fc652d5 100644
--- a/docs/tutorial/preliminary.rst
+++ b/docs/tutorial/preliminary.rst
@@ -76,7 +76,7 @@ The Rougail CLI can output a rather complete view of the dataset:
 Values are mandatory
 -------------------------
 
-It is the operator's responsibility to set configuration options values.
+.. important:: It is the operator's responsibility to set configuration options values.
 
 So, if :
 
@@ -104,10 +104,10 @@ Rougail waits for a value to be set, that's why.
 
 .. seealso:: To go further, have a look at the :tiramisu:`mandatory option <glossary.html#term-mandatory-option>` Tiramisu's definition.
 
-Type inférence
+Type inference
 -----------------
 
-By default, rougail infers a `string` type.
+By default, rougail infers a `string` type for the `proxy_mode` configuration option variable type.
 If the operator sets an option value with the `string` type, like this:
 
 .. extinclude:: https://forge.cloud.silique.fr/stove/rougail-tutorials/raw/commit/v1.1_003/config/05/config.yaml