diff --git a/src/lsystem/screen/MainFrame.java b/src/lsystem/screen/MainFrame.java
index 260f8b1..09c8577 100644
--- a/src/lsystem/screen/MainFrame.java
+++ b/src/lsystem/screen/MainFrame.java
@@ -21,10 +21,12 @@ public class MainFrame extends JFrame {
 	private JButton newGen;
 	private JButton help;
 	private int nbRules;
-	public HashMap<Integer,Component> componentList;
+	public HashMap<Integer,JTextArea> textAreaList;
+	public HashMap<Integer,JTextField> textFieldList;
 
 	public MainFrame(){
-		componentList = new HashMap<>();
+		textAreaList = new HashMap<>();
+		textFieldList = new HashMap<>();
 		nbRules = 1;
     	nbTabs = 0;
     	basePanel = new JPanel();
@@ -47,8 +49,11 @@ public class MainFrame extends JFrame {
         this.add(toolBar, BorderLayout.NORTH);
         this.setPreferredSize(new Dimension(640,600));
     }
-    public void addToComponentList(Component c ,Integer i){
-		componentList.put(i,c);
+    public void addToTextAreaList(JTextArea c ,Integer i){
+		textAreaList.put(i,c);
+	}
+	public void addToTextFieldList(JTextField c ,Integer i){
+		textFieldList.put(i,c);
 	}
 
 	public void newHelp() {
@@ -66,7 +71,7 @@ public class MainFrame extends JFrame {
 	public void closeTab() {
 		//TODO : Pour fermer un onglet, nécessite l'implémentation d'un button fermer grâce à la méthode newTab().
 	}
-	public void changeList(Character stringToAdd, byte messageType, JTextArea list) {
+	public void changeList(String stringToAdd, byte messageType, JTextArea list) {
 		if (stringToAdd == null) {
 			switch(messageType) {
 			case 0:
@@ -77,7 +82,7 @@ public class MainFrame extends JFrame {
 				throw new IllegalArgumentException("Wrong argument given to method changeList");
 			}	
 		}else{
-			list.append(String.valueOf(stringToAdd));
+			list.append(stringToAdd);
 		}
 	}
 	public String getAxiom(){
diff --git a/src/lsystem/screen/Tab.java b/src/lsystem/screen/Tab.java
index 1058263..1fae1a9 100644
--- a/src/lsystem/screen/Tab.java
+++ b/src/lsystem/screen/Tab.java
@@ -1,5 +1,7 @@
 package lsystem.screen;
 
+import lsystem.screen.listener.AxiomFieldListener;
+
 import javax.swing.*;
 import java.awt.*;
 import javax.swing.JTabbedPane;
@@ -12,22 +14,27 @@ public class Tab {
         JTextArea axiomList = new JTextArea();
         axiomList.setText("Axiome : \n");
         axiomList.setEditable(false);
+        frame.addToTextAreaList(axiomList,nbTabs);
 
         JTextArea rulesList = new JTextArea();
         rulesList.setText("Règles : \n");
         rulesList.setEditable(false);
+        frame.addToTextAreaList(rulesList,nbTabs+10);
 
         JButton closeButton = new JButton("x");
 
 
         JLabel axiome = new JLabel("Axiome");
         JLabel rules = new JLabel("Règle "+ nbRules);
+
         JTextField axiomeField = new JTextField();
-        frame.addToComponentList(axiomeField,nbTabs);
+        axiomeField.addKeyListener(new AxiomFieldListener(frame,nbTabs));
         axiomeField.setPreferredSize(new Dimension(20,20));
+        frame.addToTextFieldList(axiomeField,nbTabs);
+
         JTextField rulesField = new JTextField();
-        frame.addToComponentList(rulesField,nbTabs+10);
         rulesField.setPreferredSize(new Dimension(20,20));
+
         tab.add(axiome);
         tab.add(axiomeField);
         tab.add(axiomList);
diff --git a/src/lsystem/screen/listener/AxiomFieldListener.java b/src/lsystem/screen/listener/AxiomFieldListener.java
index e343261..7cc60b3 100644
--- a/src/lsystem/screen/listener/AxiomFieldListener.java
+++ b/src/lsystem/screen/listener/AxiomFieldListener.java
@@ -19,16 +19,20 @@ public class AxiomFieldListener implements KeyListener {
     }
     @Override
     public void keyTyped(KeyEvent ke) {
-            frame.changeList(ke.getKeyChar(),(byte)0, (JTextArea) frame.componentList.get(index));
+        if(ke.getKeyCode() != 10)
+            frame.changeList(String.valueOf(ke.getKeyChar()),(byte)0, (JTextArea) frame.textAreaList.get(index));
+        else{
+            String str = ";\n";
+            frame.changeList(str,(byte)0, (JTextArea) frame.textAreaList.get(index));
+            frame.textFieldList.get(index).setText("");
+        }
     }
 
     @Override
     public void keyPressed(KeyEvent ke) {
-
     }
 
     @Override
     public void keyReleased(KeyEvent ke) {
-
     }
 }