diff --git a/notice/api/3.0.md b/notice/api/3.0.md
index 0200952..143a313 100644
--- a/notice/api/3.0.md
+++ b/notice/api/3.0.md
@@ -257,7 +257,7 @@ The *is_optional* field must be a **boolean** set to `true` if the parameter can
 
 #### parameter.rename
 
-The *rename* field must be a **string** corresponding to the *variable name* given to the implementation. It is useful for **GET parameters** because they need to be called `URL#`, where `#` is the position in the URI.
+The *rename* field must be a **string** corresponding to the *variable name* given to the implementation. It is useful for **GET parameters** because they need to be called `URL#`, where `#` is the position in the URI. (cf. [paramter.name](#parametername)))
 
 If ommited, by default, `parameter.name` will be used.
 #### parameter.default_value
@@ -312,6 +312,8 @@ Also the **namespace** must match, it corresponds to the path (starting at `/api
 
 For instance if you have in your configuration a path called `/uri1/uri2/uri3`, you will create the file `/build/api/module/uri1/uri2/uri3.php`.
 
+*Specific*: For the root (`/`) path, it will trigger the class `\api\module\root`, so you have to create the file `/build/api/module/root.php`. (cf. [configuration format](#1---configuration-format))
+
 
 
 ### methods
@@ -322,9 +324,9 @@ Each method is represented as a class' method with the same name as the associat
 Arguments are passed to the method as a single argument which an associative array according to the configuration.
 
 _Notes_:
-* Optional parameters if not given are set to the `default` value given in the configuration (`null` if)
-* parameters of type `FILE` are given by reference but the use is the same as normal parameters
-* URI parameters are called `URL0`, `URL1` and so on according to their order if no `rename` set in the configuration.
+* Optional parameters if not given are set to their default value (cf. [parameter.optional](#parameterisoptional), [parameter.default_value](#parameterdefault_value))
+* parameters of type `FILE` are given by reference but the use is the same as normal parameters (cf. [complex types](#2---complex-types))
+* URI parameters are called `URL0`, `URL1` and so on according to their order if no `rename` set in the configuration. (cf: [parameter.name](#parametername), [parameter.rename](#parameterrename))
 
 ### return statement
 
@@ -404,6 +406,7 @@ To add a new type, just open the file `/build/api/Checker.php` and add an entry
 |Type|Sub-Type|Description|
 |---|---|---|
 |`array<a>`|`a`|Array containing only entries matching the type `a`|
+|`FILE`|_a raw file send in `multipart/form-data`|A raw file sent by `multipart/form-data`|
 
 > **Note:** It is possible to chain `array` type as many as needed.