diff --git a/MCTG/DataPersistence/DataContractXML.cs b/MCTG/DataPersistence/DataContractXML.cs
index 3bd78f7..910d26d 100644
--- a/MCTG/DataPersistence/DataContractXML.cs
+++ b/MCTG/DataPersistence/DataContractXML.cs
@@ -49,7 +49,7 @@ namespace DataPersistence
                         typeof(User),
                         typeof(Ingredient),
                         typeof(Quantity),
-                        typeof(PasswordManager)
+                        typeof(PasswordSHA256)
                     },
                     PreserveObjectReferences = true
                 };
diff --git a/MCTG/Model/Managers/MasterManager.cs b/MCTG/Model/Managers/MasterManager.cs
index d077da4..6bad13f 100644
--- a/MCTG/Model/Managers/MasterManager.cs
+++ b/MCTG/Model/Managers/MasterManager.cs
@@ -9,14 +9,38 @@ using System.Threading.Tasks;
 
 namespace Model.Managers
 {
+    /// <summary>
+    /// The Main manager of the model.
+    /// </summary>
     public class MasterManager
     {
+        #region Attributes & Properties
+        /// <summary>
+        /// The currently connected user. 'null' if no user is connected.
+        /// </summary>
         public User? CurrentConnectedUser { get; private set; }
+
+        /// <summary>
+        /// The collection of all recipes loaded.
+        /// </summary>
         public RecipeCollection Recipes { get; private set; }
+
+        /// <summary>
+        /// The collection of all users loaded.
+        /// </summary>
         public List<User> Users { get; private set; }
 
+        /// <summary>
+        /// The data manager for load, save, export and import data.
+        /// </summary>
         public DataManager DataMgr { get; private set; }
+        #endregion
 
+        #region Constructors
+        /// <summary>
+        /// Constructor of the MasterManager.
+        /// </summary>
+        /// <param name="dataManager">The serializer for the data.</param>
         public MasterManager(IDataManager dataManager)
         {
             DataMgr = new DataManager(dataManager);
@@ -24,7 +48,16 @@ namespace Model.Managers
             Recipes = DataMgr.GetRecipes("all recipes");
             Users = DataMgr.GetUsers();
         }
+        #endregion
 
+        #region Methods
+        /// <summary>
+        /// Log in an user. Test if the log in information are correct then connect the user.
+        /// </summary>
+        /// <param name="mail">The user's mail</param>
+        /// <param name="password">The user's password.</param>
+        /// <returns>True if the user was correctly connected, false if there is something wrong.</returns>
+        /// <exception cref="ArgumentNullException"></exception>
         public bool Login(string mail, string password)
         {
             if (Users is null || Users.Count == 0)
@@ -45,6 +78,10 @@ namespace Model.Managers
             return true;
         }
 
+        /// <summary>
+        /// Log out an user.
+        /// </summary>
+        /// <returns>True if the user is correctly diconnected, false otherwise.</returns>
         public bool Logout()
         {
             if (CurrentConnectedUser is null)
@@ -54,6 +91,11 @@ namespace Model.Managers
             return true;
         }
 
+        /// <summary>
+        /// Register an user.
+        /// </summary>
+        /// <param name="newuser">The new user to add in the database.</param>
+        /// <returns>False if there is a problem with the registerement, true otherwise.</returns>
         public bool Register(User newuser)
         {
             try
@@ -71,14 +113,23 @@ namespace Model.Managers
             return true;
         }
 
+        /// <summary>
+        /// Add a recipe to the database.
+        /// </summary>
+        /// <param name="recipe">The recipe to add.</param>
         public void AddRecipe(Recipe recipe)
         {
             DataMgr.Data[nameof(Recipe)].Add(recipe);
             Recipes = DataMgr.GetRecipes();
         }
 
+        /// <summary>
+        /// Get the current connected user's personal recipes.
+        /// </summary>
+        /// <returns>The current connected user's personal recipes.</returns>
         public RecipeCollection GetCurrentUserRecipes()
             => new RecipeCollection("User recipes",
                 DataMgr.GetRecipes().FindAll(r => r.AuthorMail == CurrentConnectedUser?.Mail).ToArray());
     }
+    #endregion
 }
diff --git a/MCTG/Model/Recipes/Review.cs b/MCTG/Model/Recipes/Review.cs
index 88b54c7..f55d6e7 100644
--- a/MCTG/Model/Recipes/Review.cs
+++ b/MCTG/Model/Recipes/Review.cs
@@ -10,21 +10,34 @@ using System.Xml.Linq;
 
 namespace Model
 {
+    /// <summary>
+    /// Define a Review of a recipe.
+    /// </summary>
     [DataContract(Name = "review")]
     public class Review : IEquatable<Review>
     {
+        #region Attributes & Properties
         [DataMember(Name = "stars")]
         private int _stars;
 
         [DataMember(Name = "content")]
         private string _content = "";
 
+        /// <summary>
+        /// The Id of the review.
+        /// </summary>
         [DataMember(Name = "id")]
         public int Id { get; init; }
 
+        /// <summary>
+        /// The mail of the author of the review.
+        /// </summary>
         [DataMember(Name = "authorMail")]
         public string AuthorMail { get; private set; }
 
+        /// <summary>
+        /// The number of stars the review give.
+        /// </summary>
         public int Stars
         {
             get => _stars;
@@ -35,6 +48,9 @@ namespace Model
             }
         }
 
+        /// <summary>
+        /// The comment in the review.
+        /// </summary>
         public string Content
         {
             get => _content;
@@ -44,7 +60,16 @@ namespace Model
                 else _content = value;
             }
         }
+        #endregion
 
+        #region Constructors
+        /// <summary>
+        /// Constructor of a review.
+        /// </summary>
+        /// <param name="authorMail">The review's author's mail.</param>
+        /// <param name="id">The id of the review.</param>
+        /// <param name="stars">The mark to give for the recipe.</param>
+        /// <param name="content">A comment about the recipe.</param>
         public Review(string authorMail, int? id, int stars, string content)
         {
             if (id == null)
@@ -61,16 +86,24 @@ namespace Model
             Content = content;
         }
 
+        /// <summary>
+        /// <inheritdoc/>
+        /// </summary>
         public Review(string authorMail, int stars, string content)
             : this(authorMail, null, stars, content)
         {
         }
 
+        /// <summary>
+        /// <inheritdoc/>
+        /// </summary>
         public Review(int stars, string content)
             : this("admin@mctg.fr", null, stars, content)
         {
         }
+        #endregion
 
+        #region Methods
         public override string ToString()
         {
             return $"{AuthorMail}: [ {Stars} stars ]\n{Content}";
@@ -95,5 +128,6 @@ namespace Model
         {
             return Id.GetHashCode();
         }
+        #endregion
     }
 }
diff --git a/MCTG/Model/User/PasswordManager.cs b/MCTG/Model/User/PasswordSHA256.cs
similarity index 94%
rename from MCTG/Model/User/PasswordManager.cs
rename to MCTG/Model/User/PasswordSHA256.cs
index 2aad1a2..e418de1 100644
--- a/MCTG/Model/User/PasswordManager.cs
+++ b/MCTG/Model/User/PasswordSHA256.cs
@@ -9,7 +9,7 @@ using System.Threading.Tasks;
 namespace Model
 {
     [DataContract(Name = "passmgr")]
-    public class PasswordManager : IPasswordManager
+    public class PasswordSHA256 : IPasswordManager
     {
         public string HashPassword(string password)
         {
diff --git a/MCTG/Model/User/User.cs b/MCTG/Model/User/User.cs
index 57e13e6..1085d0e 100644
--- a/MCTG/Model/User/User.cs
+++ b/MCTG/Model/User/User.cs
@@ -1,12 +1,5 @@
 
-using System;
-using System.Collections.Generic;
-using System.Collections;
-using System.Collections.ObjectModel;
-using System.Threading.Tasks;
 using System.Runtime.CompilerServices;
-using System.Text.RegularExpressions;
-using System.Text;
 using System.Runtime.Serialization;
 using System.ComponentModel;
 
@@ -178,7 +171,7 @@ namespace Model
         /// <inheritdoc cref="User.User"/>
         /// </summary>
         public User(string name, string surname, string mail, string password)
-            : this(name, surname,mail, password, new PasswordManager())
+            : this(name, surname,mail, password, new PasswordSHA256())
         {
 
         }
@@ -210,4 +203,3 @@ namespace Model
         #endregion
     }
 }
-
diff --git a/MCTG/Tests/Model_UnitTests/test_unit_user.cs b/MCTG/Tests/Model_UnitTests/test_unit_user.cs
index 02cbcdb..45e4107 100644
--- a/MCTG/Tests/Model_UnitTests/test_unit_user.cs
+++ b/MCTG/Tests/Model_UnitTests/test_unit_user.cs
@@ -12,7 +12,7 @@ namespace Model_UnitTests
         [Fact]
         public void TestConstructUser()
         {
-            PasswordManager passwordManager = new PasswordManager();
+            PasswordSHA256 passwordManager = new PasswordSHA256();
             User user = new User("Bob", "Dylan", "bd@gmail.com", "bobby");
             Assert.Equal("Bob", user.Name);
             Assert.Equal("Dylan", user.Surname);