diff --git a/renderer.php b/renderer.php
index 46cd7ef..d145d54 100644
--- a/renderer.php
+++ b/renderer.php
@@ -98,7 +98,15 @@ class renderer
     }
   }
 
-  /** @param mixed $data The data to display.*/
+  /** Display the HTML page with the alert box if needed
+    * @param string $viewclass The view class to use to create the output
+    * @param string $viewmethod The view method to use to create the output
+    * @param mixed $data The data to display.
+    * @param array|null $replacement Replace some values by some others in the
+    * created HTML page
+    * @param string|null $layoutfile The layout page to use as base
+    * @param object|null $route A previous defined "route" object
+    */
   static function html ($viewclass, $viewmethod, $data, $replacement = array(),
                         $layoutfile = "views/layout.html", $route = null)
   {
diff --git a/route.php b/route.php
index 6273766..d339991 100644
--- a/route.php
+++ b/route.php
@@ -205,7 +205,7 @@ class route
     * name
     * @param string $destURL Do a redirection of the HTTP page
     * @param string|null $module The module name
-    * @param boolean|null Permanent redirect (false by default)
+    * @param boolean|null $permanent Permanent redirect (false by default)
     * @return Exit of the PHP after doing the redirection
     */
   function redirect ($destURL, $module="", $permanent = false)
diff --git a/smtp.php b/smtp.php
index 5d456ad..af09740 100644
--- a/smtp.php
+++ b/smtp.php
@@ -190,6 +190,7 @@ class smtp
   }
 
   /** Send something to the SMTP server. Wait the acknoledgement line
+    * @param string $data The line to send to server
     */
   private function putLine ($data)
   {
@@ -199,6 +200,7 @@ class smtp
   }
 
   /** Wait something from the server
+    * @param string $message The answer to wait from server
     */
   private function getLine ($message = "")
   {
@@ -229,6 +231,8 @@ class smtp
   }
 
   /** Save the connection debug in file
+    * @param string $message The message to save in debug
+    * @param integer|null $priority The priority to use
     */
   private function debug ($message, $priority = 1)
   {
diff --git a/userssql.php b/userssql.php
index 6f8d45d..525d148 100644
--- a/userssql.php
+++ b/userssql.php
@@ -12,8 +12,11 @@ class userssql extends users
 {
   /** The database connector */
   private $dsn;
+  /** The user needed to connect to database */
   private $username;
+  /** The password needed to connect to database */
   private $password;
+  /** The optional drivers need by the database */
   private $driver_options;
   /** The db connector */
   private $db;
@@ -24,13 +27,23 @@ class userssql extends users
       Just allow chars ! */
   public $tableprefix = "";
 
-  /** the fields */
+  /** The email field in the database */
   public $fieldEmail = "email";
+  /** The firstname field in the database */
   public $fieldFirstname = "firstname";
+  /** The lastname field in the database */
   public $fieldLastname = "lastname";
+  /** The password field in the database */
   public $fieldPassword = "password";
+  /** The lastchange field in the database */
   public $fieldLastchange = "lastchange";
 
+  /** The constructor. Save the parameters to connect to the database
+    * @param string $dsn The DSN to connect
+    * @param string|null $username The username to connect
+    * @param string|null $password The password to connect
+    * @param array|null $driver_options The optional drivers parameters
+    */
   public function __construct ($dsn, $username=null, $password=null,
                                $driver_options=null)
   {
@@ -85,8 +98,13 @@ class userssql extends users
   }
 
   /** Create a new user
-      If the password is not provided, create a default passwd (can be disable
-      password) */
+    * If the password is not provided, create a default passwd (can be disable
+    * password)
+    * @param string $email The email to add
+    * @param string $firstname The firstname to add
+    * @param string $lastname The lastname to add
+    * @param string|null $password The password of the user
+    */
   public function adduser ($email, $firstname, $lastname, $password=null)
   {
     if ($this->db === null)
@@ -105,7 +123,9 @@ class userssql extends users
                                      $this->fieldPassword=>$password));
   }
 
-  /** Delete a user */
+  /** Delete a user
+    * @param string $email The email to remove
+    */
   public function deluser ($email)
   {
     if ($this->db === null)
@@ -114,7 +134,12 @@ class userssql extends users
     return $this->db->delete ($email);
   }
 
-  /** Update a user */
+  /** Update a user
+    * @param string $oldemail The old email to modify
+    * @param string $newemail The new email to save
+    * @param string $firstname The firstname of the user
+    * @param string $lastname The lastname of the user
+    */
   public function updateuser ($oldemail, $newemail, $firstname, $lastname)
   {
     if ($this->db === null)
@@ -185,6 +210,8 @@ class userssql extends users
   }
 
   /** Check if the provided password is correctely associated to the email user
+    * @param string $email The email to authenticate
+    * @param string $password The user password (not crypted !)
     */
   public function checkValidPassword ($email, $password)
   {