I am considering using an AdvancedDataGrid in hierarchical mode but am 
not sure it can do what my app needs to do, or if it can, whether the 
approach will be efficient--execute quickly and use up a lot of memory. 
I haven't worked with the AdvancedDataGrid before.

The grid will look like this:

[v] Category A
   [v]  Title 1
        * passage one blah blah blah
        * passage two
    [v] Title 2
    [v] Title 3
     .
     .
     .
   [v]  Title n

[v]Category B
   [v]  Title 1
   [v]  Title 2
   [v]  Title 3
     .
     .
     .
     Title n
etc
etc

When the user clicks on a Title node to expand it, some passages 
excerpted from the corresponding document would be fetched from the 
database, already formatted as HTML like this:

<span class='foo'>this is an excerpt <span class='abc'>100 to 
1000</span> characters in length</span>.

A style sheet  must control how the css classes in the passage excerpts 
are rendered. The grid might have as many as 100 rows, and each row 
could contain a couple of  paragraphs of html text.  Up to 1K each, but 
more typically around 100-200 characters.

If I create an item-renderer using TextArea, will 100 TextAreas be 
created if the grid has 100 Title rows even if only 3 titles are 
expanded by the user? Or are the item renderers created only for the 
rows that actually get expanded and displayed? Is there another way to 
render HTML markup in the ADG?

Thanks

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