diff --git a/ChangeLog b/ChangeLog
index f1737847..17aeb400 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2016-07-31  Markus Gans  <guru.mail@muenster.de>
+	* Rename setUpdateVTerm to updateVTerm
+	* Rename clrscr to clearArea
+	* The widget clearing method updates now only non-covered 
+	  characters on the virtual terminal.
+
 2016-07-31  Markus Gans  <guru.mail@muenster.de>
 	* Resetting the local window widget focus at 
 	  the end of the lifetime of a widget.
diff --git a/doc/TODO b/doc/TODO
index dbcf9b76..810f6a5a 100644
--- a/doc/TODO
+++ b/doc/TODO
@@ -21,7 +21,7 @@ Missing Features
 ---------------------------------------
 
 - Screen characters should get the options transparent 
-  and transparent with color
+  and transparent shadow (transparent with color)
 - FDialog title button [▲] and [▼] should maximized or restore 
   the window size on a resizeable dialog
 - A possibility to change the window size dynamically with the mouse
diff --git a/src/fbutton.cpp b/src/fbutton.cpp
index 7f8c3750..a87fb967 100644
--- a/src/fbutton.cpp
+++ b/src/fbutton.cpp
@@ -161,7 +161,7 @@ void FButton::draw()
   is_Flat = isFlat();
   is_NonFlatShadow = ((flags & (fc::shadow+fc::flat)) == fc::shadow);
   is_NoUnderline = ((flags & fc::no_underline) != 0);
-  setUpdateVTerm(false);
+  updateVTerm(false);
 
   if ( isMonochron() )
     setReverse(true);
@@ -374,7 +374,7 @@ void FButton::draw()
   if ( isMonochron() )
     setReverse(false);
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
   delete[] ButtonText;
 
   if ( is_Focus && statusBar() )
diff --git a/src/fbuttongroup.cpp b/src/fbuttongroup.cpp
index 22a5b59b..9befedfd 100644
--- a/src/fbuttongroup.cpp
+++ b/src/fbuttongroup.cpp
@@ -138,7 +138,7 @@ void FButtonGroup::directFocus()
 //----------------------------------------------------------------------
 void FButtonGroup::draw()
 {
-  setUpdateVTerm(false);
+  updateVTerm(false);
 
   if ( isMonochron() )
     setReverse(true);
@@ -153,7 +153,7 @@ void FButtonGroup::draw()
   if ( isMonochron() )
     setReverse(false);
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
 }
 
 //----------------------------------------------------------------------
diff --git a/src/fcheckbox.cpp b/src/fcheckbox.cpp
index de9db484..50b91db2 100644
--- a/src/fcheckbox.cpp
+++ b/src/fcheckbox.cpp
@@ -40,10 +40,10 @@ void FCheckBox::init()
 //----------------------------------------------------------------------
 void FCheckBox::draw()
 {
-  setUpdateVTerm(false);
+  updateVTerm(false);
   drawCheckButton();
   drawLabel();
-  setUpdateVTerm(true);
+  updateVTerm(true);
   FToggleButton::draw();
 }
 
diff --git a/src/fdialog.cpp b/src/fdialog.cpp
index 2d82cd1e..64543a2f 100644
--- a/src/fdialog.cpp
+++ b/src/fdialog.cpp
@@ -466,14 +466,14 @@ void FDialog::draw()
     height = ymax;
   }
 
-  setUpdateVTerm(false);
+  updateVTerm(false);updateVTerm(true);
   // fill the background
   setColor (foregroundColor, backgroundColor);
 
   if ( isMonochron() )
     setReverse(true);
 
-  clrscr();
+  clearArea();
   drawBorder();
   drawTitleBar();
 
@@ -526,7 +526,7 @@ void FDialog::draw()
   if ( isMonochron() )
     setReverse(false);
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
 }
 
 //----------------------------------------------------------------------
diff --git a/src/flabel.cpp b/src/flabel.cpp
index f26c4a35..44064704 100644
--- a/src/flabel.cpp
+++ b/src/flabel.cpp
@@ -239,7 +239,7 @@ void FLabel::draw()
   if ( text.isNull() || text.isEmpty() )
     return;
 
-  setUpdateVTerm(false);
+  updateVTerm(false);
 
   if ( isMonochron() )
   {
@@ -317,7 +317,7 @@ void FLabel::draw()
       setBold(false);
   }
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
 }
 
 
diff --git a/src/flineedit.cpp b/src/flineedit.cpp
index 88633292..9760c8ca 100644
--- a/src/flineedit.cpp
+++ b/src/flineedit.cpp
@@ -135,7 +135,7 @@ void FLineEdit::drawInputField()
   isActive = ((flags & fc::active) != 0);
   isShadow = ((flags & fc::shadow) != 0 );
 
-  setUpdateVTerm(false);
+  updateVTerm(false);
   gotoxy (xpos+xmin-1, ypos+ymin-1);
 
   if ( isMonochron() )
@@ -220,7 +220,7 @@ void FLineEdit::drawInputField()
   if ( isShadow )
     drawShadow ();
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
 
   // set the cursor to the first pos.
   setCursorPos (xpos+xmin+cursor_pos-offset, ypos+ymin-1);
diff --git a/src/flistbox.cpp b/src/flistbox.cpp
index 1e562b95..402cbe96 100644
--- a/src/flistbox.cpp
+++ b/src/flistbox.cpp
@@ -134,7 +134,7 @@ void FListBox::draw()
   if ( current < 1 )
     current = 1;
 
-  setUpdateVTerm(false);
+  updateVTerm(false);
   setColor (foregroundColor, backgroundColor);
 
   if ( isMonochron() )
@@ -166,7 +166,7 @@ void FListBox::draw()
   if ( isMonochron() )
     setReverse(false);
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
 
   if ( VBar->isVisible() )
     VBar->redraw();
@@ -247,7 +247,7 @@ void FListBox::drawList()
     end = std::max(last_pos, current_pos)+1;
   }
 
-  setUpdateVTerm(false);
+  updateVTerm(false);
 
   for (uInt y=start; y < end; y++)
   {
@@ -473,7 +473,7 @@ void FListBox::drawList()
     setReverse(false);
 
   unsetBold();
-  setUpdateVTerm(true);
+  updateVTerm(true);
   updateTerminal();
   flush_out();
 
diff --git a/src/fmenu.cpp b/src/fmenu.cpp
index ec3bf3d2..57b45928 100644
--- a/src/fmenu.cpp
+++ b/src/fmenu.cpp
@@ -598,12 +598,12 @@ void FMenu::draw()
 {
   // fill the background
   setColor (wc.menu_active_fg, wc.menu_active_bg);
-  setUpdateVTerm(false);
+  updateVTerm(false);
 
   if ( isMonochron() )
     setReverse(true);
 
-  clrscr();
+  clearArea();
   drawBorder();
   drawItems();
 
@@ -611,9 +611,13 @@ void FMenu::draw()
     setReverse(false);
 
   if ( (flags & fc::shadow) != 0 )
+  {
     drawMenuShadow();
-
-  setUpdateVTerm(true);
+    term_area* area = getWindowWidget(this)->getVWin();
+    putArea (xpos+xmin-1, ypos+ymin-1, area);
+  }
+  else
+    updateVTerm(true);
 }
 
 //----------------------------------------------------------------------
diff --git a/src/fmenubar.cpp b/src/fmenubar.cpp
index 19222239..be5b0857 100644
--- a/src/fmenubar.cpp
+++ b/src/fmenubar.cpp
@@ -329,7 +329,7 @@ void FMenuBar::drawItems()
   if ( itemlist.empty() )
     return;
 
-  setUpdateVTerm(false);
+  updateVTerm(false);
   gotoxy (1,1);
 
   if ( isMonochron() )
@@ -470,7 +470,7 @@ void FMenuBar::drawItems()
   if ( isMonochron() )
     setReverse(false);
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
 }
 
 //----------------------------------------------------------------------
diff --git a/src/fmessagebox.cpp b/src/fmessagebox.cpp
index 5df3bb9f..f2484506 100644
--- a/src/fmessagebox.cpp
+++ b/src/fmessagebox.cpp
@@ -229,7 +229,7 @@ void FMessageBox::draw()
   int head_offset = 0;
   int center_x = 0;
   int msg_x = int((width - int(maxLineWidth)) / 2);  // center the whole block
-  setUpdateVTerm(false);
+  updateVTerm(false);
 
   if ( isMonochron() )
     setReverse(true);
@@ -263,7 +263,7 @@ void FMessageBox::draw()
   if ( isMonochron() )
     setReverse(false);
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
 }
 
 //----------------------------------------------------------------------
diff --git a/src/fprogressbar.cpp b/src/fprogressbar.cpp
index bb726887..823c371f 100644
--- a/src/fprogressbar.cpp
+++ b/src/fprogressbar.cpp
@@ -150,14 +150,14 @@ void FProgressbar::drawBar()
 //----------------------------------------------------------------------
 void FProgressbar::draw()
 {
-  setUpdateVTerm(false);
+  updateVTerm(false);
   drawPercentage();
   drawBar();
 
   if ( (flags & fc::shadow) != 0 )
     drawShadow ();
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
   flush_out();
 }
 
@@ -204,7 +204,7 @@ void FProgressbar::setPercentage (int percentage_value)
   else
     percentage = percentage_value;
 
-  setUpdateVTerm(false);
+  updateVTerm(false);
 
   if ( isVisible() )
   {
@@ -212,14 +212,14 @@ void FProgressbar::setPercentage (int percentage_value)
     drawBar();
   }
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
   updateTerminal();
 }
 
 //----------------------------------------------------------------------
 void FProgressbar::reset()
 {
-  setUpdateVTerm(false);
+  updateVTerm(false);
   percentage = -1;
 
   if ( isVisible() )
@@ -228,7 +228,7 @@ void FProgressbar::reset()
     drawBar();
   }
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
   updateTerminal();
 }
 
diff --git a/src/fradiobutton.cpp b/src/fradiobutton.cpp
index 5c39e373..4424ef12 100644
--- a/src/fradiobutton.cpp
+++ b/src/fradiobutton.cpp
@@ -41,10 +41,10 @@ void FRadioButton::init()
 //----------------------------------------------------------------------
 void FRadioButton::draw()
 {
-  setUpdateVTerm(false);
+  updateVTerm(false);
   drawRadioButton();
   drawLabel();
-  setUpdateVTerm(true);
+  updateVTerm(true);
   FToggleButton::draw();
 }
 
diff --git a/src/fscrollbar.cpp b/src/fscrollbar.cpp
index efb91c02..90d354ed 100644
--- a/src/fscrollbar.cpp
+++ b/src/fscrollbar.cpp
@@ -80,11 +80,11 @@ void FScrollbar::init()
 //----------------------------------------------------------------------
 void FScrollbar::draw()
 {
-  setUpdateVTerm(false);
+  updateVTerm(false);
   drawButtons();
   currentSliderPos = -1;
   drawBar();
-  setUpdateVTerm(true);
+  updateVTerm(true);
 }
 
 //----------------------------------------------------------------------
@@ -563,7 +563,7 @@ void FScrollbar::drawBar()
   if (SliderPos != currentSliderPos)
   {
     int z;
-    setUpdateVTerm(false);
+    updateVTerm(false);
 
     if ( bar_orientation == fc::vertical )
     {
@@ -665,7 +665,7 @@ void FScrollbar::drawBar()
     if ( isMonochron() )
       setReverse(false);
 
-    setUpdateVTerm(true);
+    updateVTerm(true);
   }
 }
 
diff --git a/src/fstatusbar.cpp b/src/fstatusbar.cpp
index ac14bf82..7cf1d1eb 100644
--- a/src/fstatusbar.cpp
+++ b/src/fstatusbar.cpp
@@ -230,7 +230,7 @@ void FStatusBar::drawKeys()
     return;
   }
 
-  setUpdateVTerm(false);
+  updateVTerm(false);
   gotoxy (1, lastLine);
 
   if ( isMonochron() )
@@ -343,7 +343,7 @@ void FStatusBar::drawKeys()
   if ( isMonochron() )
     setReverse(false);
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
   x_msg = x;
 }
 
@@ -602,7 +602,7 @@ void FStatusBar::drawMessage()
   if ( isLastActiveFocus )
     space_offset = 0;
 
-  setUpdateVTerm(false);
+  updateVTerm(false);
   setColor (wc.statusbar_fg, wc.statusbar_bg);
   gotoxy (x, lastLine);
 
@@ -646,7 +646,7 @@ void FStatusBar::drawMessage()
   if ( isMonochron() )
     setReverse(false);
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
 }
 
 //----------------------------------------------------------------------
diff --git a/src/fswitch.cpp b/src/fswitch.cpp
index e394b08c..9b463b96 100644
--- a/src/fswitch.cpp
+++ b/src/fswitch.cpp
@@ -37,10 +37,10 @@ FSwitch::~FSwitch()  // destructor
 //----------------------------------------------------------------------
 void FSwitch::draw()
 {
-  setUpdateVTerm(false);
+  updateVTerm(false);
   drawLabel();
   drawCheckButton();
-  setUpdateVTerm(true);
+  updateVTerm(true);
   FToggleButton::draw();
   updateTerminal();
   flush_out();
diff --git a/src/fterm.cpp b/src/fterm.cpp
index 50dc1bc6..0ddf96ce 100644
--- a/src/fterm.cpp
+++ b/src/fterm.cpp
@@ -2573,7 +2573,7 @@ void FTerm::updateVTerm (FTerm::term_area* area)
 }
 
 //----------------------------------------------------------------------
-void FTerm::setUpdateVTerm (bool on)
+void FTerm::updateVTerm (bool on)
 {
   vterm_updates = on;
 
diff --git a/src/fterm.h b/src/fterm.h
index 621f0fa1..3c5046b2 100644
--- a/src/fterm.h
+++ b/src/fterm.h
@@ -278,7 +278,7 @@ class FTerm
    bool         isCovered (const FPoint&, FTerm::term_area*) const;
    bool         isCovered (int, int, FTerm::term_area*) const;
    void         updateVTerm (FTerm::term_area*);
-   void         setUpdateVTerm (bool);
+   void         updateVTerm (bool);
    void         getArea (const FPoint&, FTerm::term_area*);
    void         getArea (int, int, FTerm::term_area*);
    void         getArea (const FRect&, FTerm::term_area*);
diff --git a/src/ftextview.cpp b/src/ftextview.cpp
index 590b2e14..59e3558e 100644
--- a/src/ftextview.cpp
+++ b/src/ftextview.cpp
@@ -65,7 +65,7 @@ void FTextView::init()
 //----------------------------------------------------------------------
 void FTextView::draw()
 {
-  setUpdateVTerm(false);
+  updateVTerm(false);
   setColor (foregroundColor, backgroundColor);
 
   if ( isMonochron() )
@@ -83,7 +83,7 @@ void FTextView::draw()
   if ( HBar->isVisible() )
     HBar->redraw();
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
   drawText();
 
   if ( hasFocus() && statusBar() )
@@ -93,10 +93,10 @@ void FTextView::draw()
 
     if ( curMsg != msg )
     {
-      setUpdateVTerm(false);
+      updateVTerm(false);
       statusBar()->setMessage(msg);
       statusBar()->drawMessage();
-      setUpdateVTerm(true);
+      updateVTerm(true);
     }
   }
 
@@ -119,7 +119,7 @@ void FTextView::drawText()
   if ( end > getRows() )
     end = getRows();
 
-  setUpdateVTerm(false);
+  updateVTerm(false);
   setColor (foregroundColor, backgroundColor);
 
   if ( isMonochron() )
@@ -159,7 +159,7 @@ void FTextView::drawText()
   if ( isMonochron() )
     setReverse(false);
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
 }
 
 //----------------------------------------------------------------------
diff --git a/src/fwidget.cpp b/src/fwidget.cpp
index 0473d5ca..1094f851 100644
--- a/src/fwidget.cpp
+++ b/src/fwidget.cpp
@@ -174,7 +174,7 @@ void FWidget::init()
   foregroundColor = wc.term_fg;
   backgroundColor = wc.term_bg;
   setColor (foregroundColor, backgroundColor);
-  clrscr();
+  clearArea();
 
   accelerator_list = new Accelerators();
 }
@@ -1232,7 +1232,7 @@ void FWidget::redraw()
   {
     terminal_updates = false;
     setColor (wc.term_fg, wc.term_bg);
-    clrscr();
+    clearArea();
   }
   else if ( ! visible )
     return;
@@ -1926,7 +1926,7 @@ bool FWidget::setCursorPos (register int x, register int y)
 }
 
 //----------------------------------------------------------------------
-void FWidget::clrscr()
+void FWidget::clearArea()
 {
   term_area* area;
   FWindow*   area_widget;
@@ -1979,7 +1979,7 @@ void FWidget::clrscr()
     area->changes[i].xmax = uInt(area->width + area->right_shadow - 1);
   }
 
-  putArea (xpos+xmin-1, ypos+ymin-1, area);
+  updateVTerm (area);
 }
 
 //----------------------------------------------------------------------
diff --git a/src/fwidget.h b/src/fwidget.h
index c028ad2c..104a61f6 100644
--- a/src/fwidget.h
+++ b/src/fwidget.h
@@ -444,7 +444,7 @@ class FWidget : public FObject, public FTerm
 
    static void      gotoxy (const FPoint&);
    static void      gotoxy (register int, register int);
-   void             clrscr();
+   void             clearArea();
 
    static void      setNormal();
 
diff --git a/src/fwindow.cpp b/src/fwindow.cpp
index 1e6d9068..d1d8a7d4 100644
--- a/src/fwindow.cpp
+++ b/src/fwindow.cpp
@@ -154,7 +154,7 @@ void FWindow::delWindow (FWidget* obj)
   {
     if ( (*iter) == obj )
     {
-      window_list->erase(iter);
+      window_list->erase (iter);
       return;
     }
 
diff --git a/test/calculator.cpp b/test/calculator.cpp
index 954b3850..c9495815 100644
--- a/test/calculator.cpp
+++ b/test/calculator.cpp
@@ -290,7 +290,7 @@ Calc::~Calc()
 void Calc::drawDispay()
 {
   FString display = input;
-  setUpdateVTerm(false);
+  updateVTerm(false);
 
   if ( display.isNull() || display.isEmpty()  )
     display = L'0';
@@ -353,7 +353,7 @@ void Calc::drawDispay()
     print(separator);
   }
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
 }
 
 //----------------------------------------------------------------------
diff --git a/test/keyboard.cpp b/test/keyboard.cpp
index 3a8130d9..6b2ece36 100644
--- a/test/keyboard.cpp
+++ b/test/keyboard.cpp
@@ -45,7 +45,7 @@ void keyboard::draw()
 {
   setNormal();
   setColor(fc::Default, fc::Default);
-  clrscr();
+  clearArea();
   gotoxy (1,1);
   print ("---------------\n");
   print ("Press Q to quit\n");
diff --git a/test/mandelbrot.cpp b/test/mandelbrot.cpp
index 8bc6fed5..192048f9 100644
--- a/test/mandelbrot.cpp
+++ b/test/mandelbrot.cpp
@@ -90,7 +90,7 @@ void Mandelbrot::draw()
     current_line++;
   }
 
-  setUpdateVTerm(true);
+  updateVTerm(true);
 }
 
 //----------------------------------------------------------------------
diff --git a/test/term-attributes.cpp b/test/term-attributes.cpp
index 578d60fb..af5afe90 100644
--- a/test/term-attributes.cpp
+++ b/test/term-attributes.cpp
@@ -244,7 +244,7 @@ void AttribDemo::printAltCharset()
 //----------------------------------------------------------------------
 void AttribDemo::draw()
 {
-  setUpdateVTerm(false);
+  updateVTerm(false);
 
   // test alternate character set
   printAltCharset();
@@ -367,7 +367,7 @@ void AttribDemo::draw()
 
   gotoxy (xpos + xmin + 14, ypos + ymin + 15);
   print ("Change background color ->");
-  setUpdateVTerm(true);
+  updateVTerm(true);
 }
 
 
diff --git a/test/timer.cpp b/test/timer.cpp
index 159675cc..98a9d57c 100644
--- a/test/timer.cpp
+++ b/test/timer.cpp
@@ -50,7 +50,7 @@ void timer::draw()
 {
   setNormal();
   setColor (fc::Default, fc::Default);
-  clrscr();
+  clearArea();
   gotoxy (1,1);
   print ("---------------\n");
   print ("Press Q to quit\n");