diff --git a/src/View/Doc/Window.py b/src/View/Doc/Window.py
index ce6077ea..4be981b8 100644
--- a/src/View/Doc/Window.py
+++ b/src/View/Doc/Window.py
@@ -36,7 +36,8 @@ class DocWindow(PamhyrWindow):
     _pamhyr_ui = "WebView"
     _pamhyr_name = "Doc"
 
-    def _path_file(self, filename):
+    @classmethod
+    def _path_file(cls, filename):
         if ".py" in sys.argv[0]:
             return os.path.abspath(
                 os.path.join(
diff --git a/src/View/MainWindow.py b/src/View/MainWindow.py
index 3c74158d..8539af1d 100644
--- a/src/View/MainWindow.py
+++ b/src/View/MainWindow.py
@@ -23,11 +23,11 @@ from queue import Queue
 
 from PyQt5 import QtGui
 from PyQt5.QtGui import (
-    QKeySequence,
+    QKeySequence, QDesktopServices,
 )
 
 from PyQt5.QtCore import (
-    QTranslator, QEvent
+    QTranslator, QEvent, QUrl,
 )
 from PyQt5.QtWidgets import (
     QMainWindow, QApplication, QAction,
@@ -190,6 +190,7 @@ class ApplicationWindow(QMainWindow, ListedSubWindow, WindowToolKit):
             "action_menu_pamhyr_developers_pdf": lambda: self.open_doc_dev(ext="pdf"),
             "action_menu_pamhyr_users_html": lambda: self.open_doc_user(ext="html"),
             "action_menu_pamhyr_developers_html": lambda: self.open_doc_dev(ext="html"),
+            "action_menu_mage": self.open_doc_mage,
             "action_menu_about": self.open_about,
             # ToolBar action
             "action_toolBar_quit": self.close,
@@ -721,13 +722,20 @@ class ApplicationWindow(QMainWindow, ListedSubWindow, WindowToolKit):
 
         self.open_solver_results(self._last_solver, self._last_results)
 
-    def open_doc(self, filename):
-        doc = DocWindow(
-            filename =  filename,
-            parent = self
-        )
-        doc.show()
+    #################
+    # DOCUMENTATION #
+    #################
 
+    def open_doc(self, filename):
+        if ".odt" in filename:
+            url = QUrl(f"file://{DocWindow._path_file(filename)}")
+            QDesktopServices.openUrl(url)
+        else:
+            doc = DocWindow(
+                filename =  filename,
+                parent = self
+            )
+            doc.show()
 
     def open_doc_user(self, ext="pdf"):
         self.open_doc(f"Pamhyr2-users.{ext}")
@@ -735,6 +743,9 @@ class ApplicationWindow(QMainWindow, ListedSubWindow, WindowToolKit):
     def open_doc_dev(self, ext="pdf"):
         self.open_doc(f"Pamhyr2-dev.{ext}")
 
+    def open_doc_mage(self):
+        self.open_doc("Mage-8.odt")
+
     #########
     # DEBUG #
     #########
diff --git a/src/View/ui/MainWindow.ui b/src/View/ui/MainWindow.ui
index 951dadc9..9cd766c4 100644
--- a/src/View/ui/MainWindow.ui
+++ b/src/View/ui/MainWindow.ui
@@ -174,7 +174,7 @@
       <addaction name="action_menu_pamhyr_developers_html"/>
      </widget>
      <addaction name="menuPamhyr2"/>
-     <addaction name="action_menu_Mage"/>
+     <addaction name="action_menu_mage"/>
     </widget>
     <addaction name="menuDoc"/>
     <addaction name="action_menu_about"/>
@@ -920,7 +920,7 @@
     <string>Pamhyr2 developer</string>
    </property>
   </action>
-  <action name="action_menu_Mage">
+  <action name="action_menu_mage">
    <property name="text">
     <string>Mage</string>
    </property>