diff --git a/src/baleine/common/interfaces/server/IComToData.java b/src/baleine/common/interfaces/server/IComToData.java
index cbcb86463bc20a1ea7ee1ef30c23911b9bf5fbe1..9d53b4c524ae53cdb64cdc2f8f24d50764a97835 100644
--- a/src/baleine/common/interfaces/server/IComToData.java
+++ b/src/baleine/common/interfaces/server/IComToData.java
@@ -10,23 +10,78 @@ import baleine.common.dataModel.Message;
 import baleine.common.dataModel.Move;
 import baleine.common.dataModel.UserLight;
 
+/**
+ * IComToData This class is an interface which provides server methods to
+ * communicate from Com to Data modules.
+ */
 public interface IComToData {
-	
-    public void requestPlayerByUUID(UUID playerID);
 
-    public void addNewUser(UserLight userLight);
+	/**
+	 * Requests a player by its UUID.
+	 * 
+	 * @param playerID : the UUID of the player to retrieve
+	 */
+	public void requestPlayerByUUID(UUID playerID);
 
-    public void createGame(GameLight gameLight);
+	/**
+	 * Adds a new user to the list.
+	 * 
+	 * @param userLight : the user to add
+	 */
+	public void addNewUser(UserLight userLight);
 
-    public void requestGameSave(UUID gameID);
+	/**
+	 * Create a new game.
+	 * 
+	 * @param gameLight : the game to create
+	 */
+	public void createGame(GameLight gameLight);
 
-    public Message receiveNewChatMessage(String message, Timestamp timestamp, UUID userID, UUID gameID);
+	/**
+	 * Request saving a game by UUID.
+	 * 
+	 * @param gameID : the UUID of the game to save
+	 */
+	public void requestGameSave(UUID gameID);
 
-    public ArrayList<UUID> getAllGameParticipants (UUID gameID);
+	/**
+	 * Receive a new chat message to transfer it.
+	 * 
+	 * @param message   : the message to transfer
+	 * @param timestamp : the timestamp of the message
+	 * @param userID    : the UUID of the user sending the message
+	 * @param gameID    : the UUID of the game in which the message was sent
+	 * @return the message to transfer
+	 */
+	public Message receiveNewChatMessage(String message, Timestamp timestamp, UUID userID, UUID gameID);
 
-    public void disconnectUser(UUID userID);
+	/**
+	 * Get all the participants (players & spectators) of a game.
+	 * 
+	 * @param gameID : the UUID of the game
+	 * @return the list of users
+	 */
+	public ArrayList<UUID> getAllGameParticipants(UUID gameID);
 
-    public void addSpectator(GameLight gameLight, UserLight userLight);
+	/**
+	 * Notifies that a user has been disconnected.
+	 * 
+	 * @param userID : the UUID of the disconnected user
+	 */
+	public void disconnectUser(UUID userID);
 
-    public void sendMove(Move move);
+	/**
+	 * Adds a spectator to a game.
+	 * 
+	 * @param gameLight : the game concerned
+	 * @param userLight : the user to add as spectator
+	 */
+	public void addSpectator(GameLight gameLight, UserLight userLight);
+
+	/**
+	 * Send a move to the data module.
+	 * 
+	 * @param move : the move to send
+	 */
+	public void sendMove(Move move);
 }
\ No newline at end of file
diff --git a/src/baleine/common/interfaces/server/IDataToCom.java b/src/baleine/common/interfaces/server/IDataToCom.java
index 0b7b65da0b274d209c25f5656193aad6043e0397..d0979f40d2948e51ee23a45cec7e7e8b6e30bef9 100644
--- a/src/baleine/common/interfaces/server/IDataToCom.java
+++ b/src/baleine/common/interfaces/server/IDataToCom.java
@@ -6,11 +6,34 @@ import baleine.common.dataModel.Board;
 import baleine.common.dataModel.GameLight;
 import baleine.common.dataModel.UserLight;
 
+/**
+ * IDataToCom This class is an interface which provides server methods to
+ * communicate from Data to Com modules.
+ */
 public interface IDataToCom {
-	
+
+	/**
+	 * Notifies that a new game has been created.
+	 * 
+	 * @param newGameCreated : the new game created
+	 */
 	public void notifyNewGame(GameLight newGameCreated);
-	
+
+	/**
+	 * Sends a move update message to the different users of a game.
+	 * 
+	 * @param players     : the players of the game
+	 * @param spectators  : the spectators of the game
+	 * @param updateBoard : the board to update
+	 */
 	public void sendUpdateMoveMessage(ArrayList<UserLight> players, ArrayList<UserLight> spectators, Board updateBoard);
-	
+
+	/**
+	 * Sends an end message to the different users of a game.
+	 * 
+	 * @param players     : the players of the game
+	 * @param spectators  : the spectators of the game
+	 * @param updateBoard : the board to update
+	 */
 	public void sendEndMoveMessage(ArrayList<UserLight> players, ArrayList<UserLight> spectators, Board updateBoard);
 }