naming, added separator

mdi.py

@@ -18,7 +18,8 @@ class MDIArea(QMdiArea):
     def _add_menu(self, bar):
         menu = bar.addMenu("Windows")
         menu.addAction("Cascade")
-        menu.addAction("Tiled")
+        menu.addAction("Tile")
+        menu.addSeparator()
         menu.addAction("Close All")
         menu.triggered[QAction].connect(self.on_menu_select)
 
@@ -27,7 +28,7 @@ class MDIArea(QMdiArea):
         txt = p.text()
         if txt == "Cascade":
             self.cascadeSubWindows()
-        elif txt == "Tiled":
+        elif txt == "Tile":
             self.tileSubWindows()
         elif txt == "Close All":
             self.closeAllSubWindows()