diff --git a/Cards.m b/Cards.m
index 0b6f8c7..14845a8 100644
--- a/Cards.m
+++ b/Cards.m
@@ -1,3 +1,7 @@
+%   Original author: En Yi
+%   The card class used in the solitaire game
+%   Not optimised though
+%   Anyone can modify it, just need to give credits to the original author
 classdef Cards
     properties(SetAccess = private)
         value
diff --git a/cardHolder.m b/cardHolder.m
index 2491e97..cbb104b 100644
--- a/cardHolder.m
+++ b/cardHolder.m
@@ -1,3 +1,7 @@
+%   Original author: En Yi
+%   The card container class used in the solitaire game
+%   Not optimised though
+%   Anyone can modify it, just need to give credits to the original author
 classdef cardHolder < handle
     %% Deck Properties
     properties (SetAccess = private)
diff --git a/sulitear.m b/sulitear.m
index 79f0e2b..085b307 100644
--- a/sulitear.m
+++ b/sulitear.m
@@ -1,4 +1,9 @@
 function sulitear()
+%   Original author: En Yi
+%   A solitaire game on MATLAB, very self-explanatory
+%   Not optimised though
+%   Have fun!
+%   Anyone can modify it, just need to give credits to the original author
 clc;
 % Construct the window with the axes
 scrsz = get(0,'ScreenSize');