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Important Observations

• If you check the code you have written for this web page, which is quite sophisticated, you have written less than 50 lines of code (excluding component definitions).
• The User Defined Control means that sophisticated custom interfaces can easily be defined which are implemented by the Tree control.
• Passing data into the reusable part, UDC, is highly automated by the *listfields #ListFields definition and the OnAdd method in the UDC which is invoked by the Add_Entry command applied to the Tree control.

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• How to define and implement a simple User Defined Control (UDC) for the Tree component.
• How to use a Theme in your web page application.

 
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