diff --git a/Demo_Design_Patterns.py b/Demo_Design_Patterns.py
new file mode 100644
index 00000000..1f054245
--- /dev/null
+++ b/Demo_Design_Patterns.py
@@ -0,0 +1,31 @@
+# DESIGN PATTERN 1 - Simple Window
+import PySimpleGUI as sg
+
+layout = [[ sg.Text('My layout') ]]
+
+window = sg.Window('My window').Layout(layout)
+button, value = window.Read()
+
+# DESIGN PATTERN 2 - Persistent Window
+import PySimpleGUI as sg
+
+layout = [[ sg.Text('My layout') ]]
+
+window = sg.Window('My new window').Layout(layout)
+
+while True:     # Event Loop
+    button, value = window.Read()
+    if button is None:
+        break
+
+# DESIGN PATTERN 3 - Persistent Window with "early update" required
+import PySimpleGUI as sg
+
+layout = [[ sg.Text('My layout') ]]
+
+window = sg.Window('My new window').Layout(layout).Finalize()
+
+while True:     # Event Loop
+    button, value = window.Read()
+    if button is None:
+        break
\ No newline at end of file
diff --git a/Demo_Graph_Element.py b/Demo_Graph_Element.py
index da50d3ae..9b831690 100644
--- a/Demo_Graph_Element.py
+++ b/Demo_Graph_Element.py
@@ -29,10 +29,8 @@ def main():
     layout = [  [sg.T('Ping times to Google.com', font='Any 12'), sg.Quit(pad=((100,0), 0), button_color=('white', 'black'))],
                [sg.Graph(CANVAS_SIZE, (0,0), (SAMPLES,500),background_color='black', key='graph')],]
 
-    window = sg.Window('Canvas test', grab_anywhere=True, background_color='black', no_titlebar=False, use_default_focus=False)
-    window.Layout(layout)
+    window = sg.Window('Canvas test', grab_anywhere=True, background_color='black', no_titlebar=False, use_default_focus=False).Layout(layout)
 
-    window.Finalize()
     graph = window.FindElement('graph')
 
     prev_response_time = None