diff --git a/src/Test.java b/src/Test.java
deleted file mode 100644
index af8a061..0000000
--- a/src/Test.java
+++ /dev/null
@@ -1,5 +0,0 @@
-
-public class Test {
-	//example
-
-}
diff --git a/src/backend/Simulator.java b/src/backend/Simulator.java
index 52979cd..2f70cb7 100644
--- a/src/backend/Simulator.java
+++ b/src/backend/Simulator.java
@@ -27,7 +27,6 @@ public class Simulator extends Thread {
 	private boolean clickActionFlag;
 	private int loopDelay = 150;
 
-	//TODO : add missing attribute(s)
 	private int[][] field;
 	//DONE
 
@@ -42,11 +41,10 @@ public class Simulator extends Thread {
 		fieldBirthValues = new ArrayList<Integer>();
 		fieldSurviveValues = new ArrayList<Integer>();
 
-		//TODO : add missing attribute initialization
 		field = new int[LINE_NUM][COL_NUM]; // Initialize the field
 		//DONE
 		
-		
+		// Default rule: Survive for 2 or 3 neighbors, birth with 3 neighbors
 		for(int i =0; i<9; i++) {
 			if (i==2 || i==3) {
 				fieldSurviveValues.add(i);