diff --git a/libriis/classes/design.py b/libriis/classes/design.py
index 6b75f89..f64efd1 100644
--- a/libriis/classes/design.py
+++ b/libriis/classes/design.py
@@ -16,7 +16,10 @@ import os, re
 from PyQt5 import QtCore
 from PyQt5.QtCore import QUrl, QSettings, QSizeF, Qt
 from PyQt5.QtGui import QKeySequence, QFont
-from PyQt5.QtWidgets import QWidget, QTabWidget, QVBoxLayout, QHBoxLayout, QSplitter, QPlainTextEdit, QShortcut, QPushButton, QCheckBox, QSpinBox, QLabel
+from PyQt5.QtWidgets import (QWidget, QTabWidget,
+                              QVBoxLayout, QHBoxLayout, QSplitter,
+                              QPlainTextEdit, QShortcut,
+                              QPushButton, QCheckBox, QSpinBox, QLabel)
 from PyQt5.QtWebKit import QWebSettings
 from PyQt5.QtWebKitWidgets import QWebView, QWebInspector
 from PyQt5.QtPrintSupport import QPrintPreviewDialog, QPrinter
@@ -316,6 +319,7 @@ class CodeEditor(QPlainTextEdit):
       self.tabs = tabs
       self.file = file
       self.hl= highlighter.Highlighter(self.document(),mode)
+      # TODO: set code editor background color to dark
       self.setText()
       self.setTabStopWidth(15)
 
diff --git a/libriis/classes/mainwindow.py b/libriis/classes/mainwindow.py
index e821463..70ac1d9 100644
--- a/libriis/classes/mainwindow.py
+++ b/libriis/classes/mainwindow.py
@@ -10,15 +10,17 @@
 
 from __future__ import absolute_import, print_function, division, unicode_literals
 
-import os
-
-from PyQt5.QtGui import QIcon
-from PyQt5.QtWidgets import QMainWindow, QAction, QWidget, QLabel, QStackedWidget, QFileDialog, QMessageBox
+import os, asyncio
 
+from PyQt5.QtCore import Qt
+from PyQt5.QtGui import QIcon, QKeySequence
+from PyQt5.QtWidgets import (QMainWindow, QAction, QWidget,
+                              QLabel, QStackedWidget,
+                              QFileDialog, QMessageBox,
+                              QShortcut)
 from . import design, content, docsetdialog
 
 
-
 class MainWindow(QMainWindow):
    def __init__(self, core):
       super(MainWindow, self).__init__()
@@ -251,6 +253,45 @@ class MainWindow(QMainWindow):
       elif q.text() == "&Version":
          self.mainstack.setCurrentIndex(2)
 
+   #     __              ____                      ______                 __
+   #    / /_____  __  __/ __ \________  __________/ ____/   _____  ____  / /_
+   #   / //_/ _ \/ / / / /_/ / ___/ _ \/ ___/ ___/ __/ | | / / _ \/ __ \/ __/
+   #  / ,< /  __/ /_/ / ____/ /  /  __(__  |__  ) /___ | |/ /  __/ / / / /_
+   # /_/|_|\___/\__, /_/   /_/   \___/____/____/_____/ |___/\___/_/ /_/\__/
+   #           /____/
+   # def keyPressEvent(self, e):
+   #    print('keyPressEvent', e.key())
+   #    # print('Qt.Key_Alt', Qt.Key_Alt)
+   #    super(MainWindow, self).keyPressEvent(e)
+   #    self.checkToggleMenu('pressed', e.key() == Qt.Key_Alt)
+   #
+   # def keyReleaseEvent(self, e):
+   #    print('keyReleaseEvent', e.key())
+   #    # print('Qt.Key_Alt', Qt.Key_Alt)
+   #    super(MainWindow, self).keyReleaseEvent(e)
+   #    self.checkToggleMenu('released', e.key() == Qt.Key_Alt)
+
+   # def checkToggleMenu(self, act='released', alt=True):
+   #    print("-- -- checkToggleMenu : "+act+" | alt :"+str(alt))
+   #    # if alt is pressed, other key pressevent is not fired, only release :(
+   #    # keyPressEvent is waiting for toggleMenu o_O which is supposed to be asynchro ...
+   #    if not alt:
+   #       self.key_pressed_after_alt = True
+   #    if alt and act=="pressed":
+   #       self.key_pressed_after_alt = False
+   #    if act == 'released' and alt:
+   #       loop = asyncio.get_event_loop()
+   #       loop.run_until_complete(self.toggleMenu())
+   #       # loop.close()
+
+   # async def toggleMenu(self):
+   #    print('toggleMenu')
+   #    await asyncio.sleep(2)
+   #    if not self.key_pressed_after_alt:
+   #       print('!! !! TOGGLE !! !!')
+   #       # self.menuBar().setVisible(not self.menuBar().isVisible())
+
+
    #     __  ___      _      _____ __             __
    #    /  |/  /___ _(_)___ / ___// /_____ ______/ /__
    #   / /|_/ / __ `/ / __ \\__ \/ __/ __ `/ ___/ //_/