This popular layout lets you stack Panels (or its subclasses) on top of each other and expand and view just one at a time. From a usability perspective this helps group common functionality together while hiding parts the user is not interested in, simplifying what the user is seeing at any one time. Here is an example of a very simple Panel:
The code to achieve it:
<ext:Window runat="server" Layout="Accordion" Width="150" Height="200" Border="false">
<Items>
<ext:Panel Title="Panel 1" />
<ext:Panel Title="Panel 2" />
<ext:Panel Title="Panel 3" />
</Items>
</ext:Window>
Key aspects of this code include the following:
Window
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