diff --git a/Undo.h b/Undo.h
new file mode 100644
index 0000000..e4ad16d
--- /dev/null
+++ b/Undo.h
@@ -0,0 +1,21 @@
+#ifndef UNDO_H
+#define UNDO_H
+
+#include <QUndoCommand>
+#include <QLineEdit>
+
+class LineEditCommand : public QUndoCommand {
+public:
+    LineEditCommand(QLineEdit* edit, const QString& oldText, const QString& newText)
+        : m_edit(edit), m_oldText(oldText), m_newText(newText) {}
+
+    void undo() override { m_edit->setText(m_oldText); }
+    void redo() override { m_edit->setText(m_newText); }
+
+private:
+    QLineEdit* m_edit;
+    QString m_oldText;
+    QString m_newText;
+};
+
+#endif // UNDO_H
diff --git a/data/parcours2.json b/data/parcours2.json
new file mode 100644
index 0000000..6ed3056
--- /dev/null
+++ b/data/parcours2.json
@@ -0,0 +1,80 @@
+{
+    "name": "Chemin des Saveurs",
+    "city": "Bourg en Bresse",
+    "departement": 1,
+    "difficulty": 3,
+    "duration": 3.8,
+    "length": 24.6,
+    "description": "Parcours gourmand et culturel entre ville et campagne, à la découverte des trésors cachés de Bourg en Bresse.",
+    "image": "data/parcours1.png",
+    "steps": [
+        {
+            "numero": 1,
+            "title": "Départ au centre-ville",
+            "GPS": "N 46 12.321 E 5 13.245",
+            "indice": "Sous la grande horloge, cherchez la plaque dorée.",
+            "reponse": "Horloge",
+            "dialogue": [
+                {
+                    "personnage": "Clémentine",
+                    "texte": "Bienvenue à tous, voici le centre historique !"
+                },
+                {
+                    "personnage": "Léo",
+                    "texte": "Regardez cette magnifique horloge, elle date du XIXe siècle !"
+                }
+            ]
+        },
+        {
+            "numero": 2,
+            "title": "Marché couvert",
+            "GPS": "N 46 12.500 E 5 13.800",
+            "indice": "Le nombre de colonnes à l'entrée principale vous donnera la solution.",
+            "reponse": 6,
+            "dialogue": [
+                {
+                    "personnage": "Aurélie",
+                    "texte": "Ici, on trouve les meilleurs fromages de la région !"
+                },
+                {
+                    "personnage": "Sami",
+                    "texte": "Combien de colonnes vois-tu à l'entrée ?"
+                }
+            ]
+        },
+        {
+            "numero": 3,
+            "title": "Au bord de la Reyssouze",
+            "GPS": "N 46 12.900 E 5 13.900",
+            "indice": "Sous le vieux pont de pierre, cherchez une gravure effacée.",
+            "reponse": "1912",
+            "dialogue": [
+                {
+                    "personnage": "Juliette",
+                    "texte": "La Reyssouze apporte de la fraîcheur en été."
+                },
+                {
+                    "personnage": "Marc",
+                    "texte": "Regarde cette inscription ancienne sur la pierre, tu arrives à la lire ?"
+                }
+            ]
+        },
+        {
+            "numero": 4,
+            "title": "Arrivée à l'abbaye",
+            "GPS": "N 46 13.024 E 5 14.160",
+            "indice": "L'année inscrite au-dessus du portail principal.",
+            "reponse": 1655,
+            "dialogue": [
+                {
+                    "personnage": "Claire",
+                    "texte": "Voilà l'abbaye ! Admire l'architecture."
+                },
+                {
+                    "personnage": "Nathalie",
+                    "texte": "C'est ici la dernière étape. Observez bien la date !"
+                }
+            ]
+        }
+    ]
+}
diff --git a/mainwindow.cpp b/mainwindow.cpp
index fa8f705..eef3d8e 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -1,9 +1,12 @@
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
 #include "path.h"
-
+#include "step.h"
+#include "Undo.h"
 #include <QFileDialog>
 #include <QMessageBox>
+#include <QLineEdit>
+#include <QTimer>
 
 
 #include <QFile>
@@ -15,8 +18,41 @@
 MainWindow::MainWindow(QWidget *parent)
     : QMainWindow(parent)
     , ui(new Ui::MainWindow)
+    , undoStack(new QUndoStack(this))
+    , Clipboard(QGuiApplication::clipboard())
 {
     ui->setupUi(this);
+
+
+    connect(ui->titleEdit, &QLineEdit::editingFinished, this, [this]() {
+        static QString previousText;
+        QString currentText = ui->titleEdit->text();
+        if(previousText != currentText) {
+            undoStack->push(new LineEditCommand(ui->titleEdit, previousText, currentText));
+            previousText = currentText;
+        }
+    });
+
+    connect(ui->locEdit, &QLineEdit::editingFinished, this, [this]() {
+        static QString previousText;
+        QString currentText = ui->locEdit->text();
+        if(previousText != currentText) {
+            undoStack->push(new LineEditCommand(ui->locEdit, previousText, currentText));
+            previousText = currentText;
+        }
+    });
+
+    connect(ui->imagePath, &QLineEdit::editingFinished, this, [this]() {
+        static QString previousText;
+        QString currentText = ui->imagePath->text();
+        if(previousText != currentText) {
+            undoStack->push(new LineEditCommand(ui->imagePath, previousText, currentText));
+            previousText = currentText;
+        }
+    });
+
+    connect(ui->actionEditUndo, &QAction::triggered, undoStack, &QUndoStack::undo);
+    connect(ui->actionEditRedo, &QAction::triggered, undoStack, &QUndoStack::redo);
 }
 
 MainWindow::~MainWindow()
@@ -44,7 +80,7 @@ void MainWindow::onTextChanged()
     textChanged = true;
 }
 
-void MainWindow::loadPath()
+void MainWindow::loadNewPath()
 {
     QString fileName = QFileDialog::getOpenFileName(this, "Open the file");
     if(fileName.isEmpty()) return;
@@ -58,6 +94,18 @@ void MainWindow::loadPath()
     Path* p = new Path(&file);
     currentPath = p;
     path.append(p);
+    loadPath(p);
+
+    int pathCount = path.length();
+    ui->pathNumber->setMaximum(pathCount);
+    ui->pathNumber->setSuffix("/" + QString::number(pathCount));
+    ui->pathNumber->setValue(path.indexOf(currentPath)+1);
+}
+
+void MainWindow::loadPath(Path* p) {
+
+    QList<Step> steps = p->getStep();
+
 
     ui->titleEdit->setText(p->getName());
     ui->locEdit->setText(p->getCity());
@@ -66,8 +114,36 @@ void MainWindow::loadPath()
     ui->durationSpin->setValue(p->getDuration());
     ui->imagePath->setText(p->getImage());
     ui->depSpin->setValue(p->getDepartement());
-
     loadImage(p->getImage());
+
+    ui->dialogEdit->clear();
+
+    if(!steps.isEmpty()) {
+        Step firstStep = p->getStep().first();
+        ui->stepTitle->setText(firstStep.getTitle());
+        ui->LatitudeSpin->setValue(firstStep.getLatitude());
+        ui->longitudeSpin->setValue(firstStep.getLongitude());
+
+        for(int i = 0; i < firstStep.getTexte().length(); i++) {
+            QString q = firstStep.getPersonnage().at(i) + ": " + firstStep.getTexte().at(i);
+            ui->dialogEdit->appendPlainText(q);
+        }
+
+        ui->stepNumber->setValue(1);
+        ui->stepNumber->setSuffix("/" + QString::number(steps.length()));
+        ui->stepNumber->setMaximum(steps.length());
+    }
+}
+
+void MainWindow::loadStep(Step s) {
+    ui->stepTitle->setText(s.getTitle());
+    ui->LatitudeSpin->setValue(s.getLatitude());
+    ui->longitudeSpin->setValue(s.getLongitude());
+
+    for(int i = 0; i < s.getTexte().length(); i++) {
+        QString q = s.getPersonnage().at(i) + ": " + s.getTexte().at(i);
+        ui->dialogEdit->appendPlainText(q);
+    }
 }
 
 void MainWindow::addNewPath()
@@ -129,7 +205,7 @@ void MainWindow::on_pushButton_clicked()
 
 void MainWindow::on_actionOpen_triggered()
 {
-    this->loadPath();
+    this->loadNewPath();
 }
 
 void MainWindow::on_toolButton_clicked()
@@ -139,6 +215,7 @@ void MainWindow::on_toolButton_clicked()
     loadImage(fileName);
 }
 
+
 void MainWindow::saveFile(){
     QString fileName;
     if (currentFile.isEmpty()) {
@@ -172,10 +249,10 @@ void MainWindow::saveFile(){
         stepObject["GPS"] = step.toGPSFormat();
         stepObject["reponse"] = step.getResponse();
         QJsonArray dialogues;
-        for(int i=0; i<step.getListeDialogue().size(); i++){
+        for(int i=0; i<step.getTexte().size(); i++){
             QJsonObject dialogueObject;
-            dialogueObject["personnage"] = step.getListePersonnage()[i];
-            dialogueObject["texte"] = step.getListeDialogue()[i];
+            dialogueObject["personnage"] = step.getPersonnage()[i];
+            dialogueObject["texte"] = step.getTexte()[i];
             dialogues.append(dialogueObject);
         }
         stepObject["dialogue"] = dialogues;
@@ -194,3 +271,60 @@ void MainWindow::on_actionSave_triggered()
     this->saveFile();
 }
 
+void MainWindow::on_actionopenFile_triggered()
+{
+    this->loadNewPath();
+}
+
+void MainWindow::on_actionEditCopy_triggered()
+{
+    QWidget *focused = QApplication::focusWidget();
+    QLineEdit* lineEdit = qobject_cast<QLineEdit*>(focused);
+
+    if(lineEdit) {
+        Clipboard->setText(lineEdit->selectedText());
+    }
+}
+
+
+void MainWindow::on_actionEditPaste_triggered()
+{
+    QWidget *focused = QApplication::focusWidget();
+    QLineEdit* lineEdit = qobject_cast<QLineEdit*>(focused);
+
+    if(lineEdit) {
+        QString text = lineEdit->text();
+        int pos = lineEdit->cursorPosition();
+        text.insert(pos, Clipboard->text());
+        lineEdit->setText(text);
+    }
+}
+
+
+void MainWindow::on_actionEditCut_triggered()
+{
+    QWidget *focused = QApplication::focusWidget();
+    QLineEdit* lineEdit = qobject_cast<QLineEdit*>(focused);
+
+    if(lineEdit) {
+        QString text = lineEdit->text();
+        QString selectedText = lineEdit->selectedText();
+        int pos = lineEdit->selectionStart();
+        text.remove(pos, selectedText.length());
+        Clipboard->setText(selectedText);
+        lineEdit->setText(text);
+    }
+}
+
+
+void MainWindow::on_pathNumber_valueChanged(int arg1)
+{
+    this->loadPath(path.at(ui->pathNumber->value()-1));
+}
+
+
+void MainWindow::on_stepNumber_valueChanged(int arg1)
+{
+    this->loadStep(currentPath->getStep().at(arg1-1));
+}
+
diff --git a/mainwindow.h b/mainwindow.h
index 5540d1d..1472ed3 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -2,7 +2,8 @@
 #define MAINWINDOW_H
 
 #include <QMainWindow>
-
+#include <QUndoStack>
+#include <QClipboard>
 #include "path.h"
 
 QT_BEGIN_NAMESPACE
@@ -21,7 +22,9 @@ public:
     void updatePathView();
     void updateStepView(size_t num);
     void onTextChanged();
-    void loadPath();
+    void loadNewPath();
+    void loadPath(Path* p);
+    void loadStep(Step s);
     void addNewPath();
     void addNewStep();
     void exportHTMLMap();
@@ -36,6 +39,18 @@ private slots:
 
     void on_actionSave_triggered();
 
+    void on_actionopenFile_triggered();
+
+    void on_actionEditCopy_triggered();
+
+    void on_actionEditPaste_triggered();
+
+    void on_actionEditCut_triggered();
+
+    void on_pathNumber_valueChanged(int arg1);
+
+    void on_stepNumber_valueChanged(int arg1);
+
 private:
     Ui::MainWindow *ui;
     QString currentFile;
@@ -43,5 +58,7 @@ private:
     QList<Path*> path;
     Path* currentPath;
     void loadImage(QString fileName);
+    QUndoStack *undoStack;
+    QClipboard* Clipboard;
 };
 #endif // MAINWINDOW_H
diff --git a/mainwindow.ui b/mainwindow.ui
index 98e41b5..4aa46f1 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -7,9 +7,21 @@
     <x>0</x>
     <y>0</y>
     <width>800</width>
-    <height>626</height>
+    <height>598</height>
    </rect>
   </property>
+  <property name="sizePolicy">
+   <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+    <horstretch>0</horstretch>
+    <verstretch>0</verstretch>
+   </sizepolicy>
+  </property>
+  <property name="minimumSize">
+   <size>
+    <width>0</width>
+    <height>0</height>
+   </size>
+  </property>
   <property name="windowTitle">
    <string>MainWindow</string>
   </property>
@@ -51,7 +63,7 @@
       <property name="frameShape">
        <enum>QFrame::NoFrame</enum>
       </property>
-      <widget class="QSpinBox" name="spinBox">
+      <widget class="QSpinBox" name="pathNumber">
        <property name="geometry">
         <rect>
          <x>10</x>
@@ -60,6 +72,12 @@
          <height>27</height>
         </rect>
        </property>
+       <property name="minimum">
+        <number>1</number>
+       </property>
+       <property name="value">
+        <number>1</number>
+       </property>
       </widget>
       <widget class="QLineEdit" name="titleEdit">
        <property name="geometry">
@@ -280,10 +298,145 @@
      </widget>
     </item>
     <item>
-     <widget class="QFrame" name="frame_2">
+     <widget class="QFrame" name="stepInformationFrame">
+      <property name="sizePolicy">
+       <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+        <horstretch>0</horstretch>
+        <verstretch>0</verstretch>
+       </sizepolicy>
+      </property>
       <property name="frameShape">
        <enum>QFrame::NoFrame</enum>
       </property>
+      <widget class="QWidget" name="steptitleFrame" native="true">
+       <property name="geometry">
+        <rect>
+         <x>0</x>
+         <y>10</y>
+         <width>781</width>
+         <height>45</height>
+        </rect>
+       </property>
+       <layout class="QHBoxLayout" name="horizontalLayout_7">
+        <item>
+         <widget class="QSpinBox" name="stepNumber">
+          <property name="minimum">
+           <number>1</number>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QLineEdit" name="stepTitle"/>
+        </item>
+        <item>
+         <widget class="QToolButton" name="addStep">
+          <property name="text">
+           <string>...</string>
+          </property>
+          <property name="icon">
+           <iconset resource="data.qrc">
+            <normaloff>:/data/images/data/images/add.png</normaloff>:/data/images/data/images/add.png</iconset>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </widget>
+      <widget class="QWidget" name="stepCoordinatesFrame" native="true">
+       <property name="geometry">
+        <rect>
+         <x>0</x>
+         <y>60</y>
+         <width>781</width>
+         <height>63</height>
+        </rect>
+       </property>
+       <layout class="QHBoxLayout" name="horizontalLayout_11">
+        <item>
+         <widget class="QWidget" name="latFrame" native="true">
+          <layout class="QHBoxLayout" name="horizontalLayout_8">
+           <item>
+            <widget class="QLabel" name="latLbl">
+             <property name="text">
+              <string>Latitude</string>
+             </property>
+             <property name="alignment">
+              <set>Qt::AlignmentFlag::AlignCenter</set>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QDoubleSpinBox" name="LatitudeSpin">
+             <property name="decimals">
+              <number>6</number>
+             </property>
+             <property name="maximum">
+              <double>90.000000000000000</double>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </widget>
+        </item>
+        <item>
+         <widget class="QWidget" name="longFrame" native="true">
+          <layout class="QHBoxLayout" name="horizontalLayout_9">
+           <item>
+            <widget class="QLabel" name="longLbl">
+             <property name="text">
+              <string>Longitude</string>
+             </property>
+             <property name="alignment">
+              <set>Qt::AlignmentFlag::AlignCenter</set>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QDoubleSpinBox" name="longitudeSpin">
+             <property name="decimals">
+              <number>6</number>
+             </property>
+             <property name="minimum">
+              <double>-180.000000000000000</double>
+             </property>
+             <property name="maximum">
+              <double>180.000000000000000</double>
+             </property>
+            </widget>
+           </item>
+          </layout>
+         </widget>
+        </item>
+        <item>
+         <widget class="QWidget" name="responseFrame" native="true">
+          <layout class="QHBoxLayout" name="horizontalLayout_10">
+           <item>
+            <widget class="QLabel" name="responseLbl">
+             <property name="text">
+              <string>Response</string>
+             </property>
+             <property name="alignment">
+              <set>Qt::AlignmentFlag::AlignCenter</set>
+             </property>
+            </widget>
+           </item>
+           <item>
+            <widget class="QSpinBox" name="responseSpin"/>
+           </item>
+          </layout>
+         </widget>
+        </item>
+       </layout>
+      </widget>
+      <widget class="QPlainTextEdit" name="dialogEdit">
+       <property name="geometry">
+        <rect>
+         <x>10</x>
+         <y>130</y>
+         <width>761</width>
+         <height>81</height>
+        </rect>
+       </property>
+      </widget>
      </widget>
     </item>
    </layout>
@@ -325,7 +478,7 @@
     <bool>false</bool>
    </attribute>
    <addaction name="actionNewFile"/>
-   <addaction name="actionNew"/>
+   <addaction name="actionopenFile"/>
    <addaction name="actionSaveFile"/>
    <addaction name="actionSaveAsFile"/>
    <addaction name="actionPrintFile"/>
@@ -367,7 +520,7 @@
      <normaloff>:/data/images/data/images/new.png</normaloff>:/data/images/data/images/new.png</iconset>
    </property>
    <property name="text">
-    <string>NewFile</string>
+    <string>New File</string>
    </property>
    <property name="menuRole">
     <enum>QAction::NoRole</enum>
@@ -379,7 +532,7 @@
      <normaloff>:/data/images/data/images/save_as.png</normaloff>:/data/images/data/images/save_as.png</iconset>
    </property>
    <property name="text">
-    <string>SaveFile</string>
+    <string>Save</string>
    </property>
    <property name="menuRole">
     <enum>QAction::NoRole</enum>
@@ -391,7 +544,7 @@
      <normaloff>:/data/images/data/images/save.png</normaloff>:/data/images/data/images/save.png</iconset>
    </property>
    <property name="text">
-    <string>SaveAsFile</string>
+    <string>Save as</string>
    </property>
    <property name="menuRole">
     <enum>QAction::NoRole</enum>
@@ -403,7 +556,7 @@
      <normaloff>:/data/images/data/images/print.png</normaloff>:/data/images/data/images/print.png</iconset>
    </property>
    <property name="text">
-    <string>PrintFile</string>
+    <string>Print</string>
    </property>
    <property name="menuRole">
     <enum>QAction::NoRole</enum>
@@ -415,7 +568,7 @@
      <normaloff>:/data/images/data/images/copy.png</normaloff>:/data/images/data/images/copy.png</iconset>
    </property>
    <property name="text">
-    <string>EditCopy</string>
+    <string>Copy</string>
    </property>
    <property name="menuRole">
     <enum>QAction::NoRole</enum>
@@ -427,7 +580,7 @@
      <normaloff>:/data/images/data/images/paste.png</normaloff>:/data/images/data/images/paste.png</iconset>
    </property>
    <property name="text">
-    <string>EditPaste</string>
+    <string>Paste</string>
    </property>
    <property name="menuRole">
     <enum>QAction::NoRole</enum>
@@ -439,7 +592,7 @@
      <normaloff>:/data/images/data/images/cut.png</normaloff>:/data/images/data/images/cut.png</iconset>
    </property>
    <property name="text">
-    <string>EditCut</string>
+    <string>Cut</string>
    </property>
    <property name="menuRole">
     <enum>QAction::NoRole</enum>
@@ -451,7 +604,7 @@
      <normaloff>:/data/images/data/images/edit_undo.png</normaloff>:/data/images/data/images/edit_undo.png</iconset>
    </property>
    <property name="text">
-    <string>EditUndo</string>
+    <string>Undo</string>
    </property>
    <property name="menuRole">
     <enum>QAction::NoRole</enum>
@@ -463,19 +616,19 @@
      <normaloff>:/data/images/data/images/edit_redo.png</normaloff>:/data/images/data/images/edit_redo.png</iconset>
    </property>
    <property name="text">
-    <string>EditRedo</string>
+    <string>Redo</string>
    </property>
    <property name="menuRole">
     <enum>QAction::NoRole</enum>
    </property>
   </action>
-  <action name="actionNew">
+  <action name="actionopenFile">
    <property name="icon">
     <iconset resource="data.qrc">
-     <normaloff>:/data/images/data/images/new.png</normaloff>:/data/images/data/images/new.png</iconset>
+     <normaloff>:/data/images/data/images/open.png</normaloff>:/data/images/data/images/open.png</iconset>
    </property>
    <property name="text">
-    <string>New</string>
+    <string>Open file</string>
    </property>
    <property name="menuRole">
     <enum>QAction::NoRole</enum>
diff --git a/sae201.pro b/sae201.pro
index 8cb9d3f..04a7b14 100644
--- a/sae201.pro
+++ b/sae201.pro
@@ -15,6 +15,7 @@ SOURCES += \
     path.cpp \
 
 HEADERS += \
+    Undo.h \
     mainwindow.h \
     step.h \
     path.h \
diff --git a/step.cpp b/step.cpp
index e812aca..93d9ec8 100644
--- a/step.cpp
+++ b/step.cpp
@@ -34,6 +34,16 @@ Step::Step() {
 }
 
 
+QList<QString> Step::getPersonnage() const
+{
+    return personnage;
+}
+
+QList<QString> Step::getTexte() const
+{
+    return texte;
+}
+
 Step::Step( QJsonObject &in)
 {
     title = in["title"].toString();
@@ -41,7 +51,7 @@ Step::Step( QJsonObject &in)
     QString gps = in["GPS"].toString();
     QStringList parts = gps.split(" ", Qt::SkipEmptyParts);
 
-    QChar latDir = parts[0][0];  // c'est le premier QChar du QString t'as capté
+    QChar latDir = parts[0][0];
     int latDeg = parts[1].toInt();
     float latMin = parts[2].toFloat();
     setLatitude(latDeg, latMin, latDir);
diff --git a/step.h b/step.h
index a18c15d..fc6ffd3 100644
--- a/step.h
+++ b/step.h
@@ -26,9 +26,9 @@ public:
     float getLatitude() const;
     float getLongitude() const;
     int getResponse() const;
-    QList<QString> getListeDialogue();
-    QList<QString> getListePersonnage();
     QString toGPSFormat();
+    QList<QString> getPersonnage() const;
+    QList<QString> getTexte() const;
 };
 
 #endif // STEP_H