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And here is a screenshot of the standard grid viewer created from the above definition.

Drill-down view

The nesting capability for grid viewers is really powerful, as it can be used to create a drill-down view of the data. Consider the scenario with a grid viewer showing all Trigger objects. Wouldn't it be nice to offer the user the capability to display the trigger source when selecting a row in the list? This is easily accomplished with the following definition:

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