weird question about NSTable

I want to create a list of items using NSTable, but there is one
component of the list that could have multiple entries. One way to do
this would be to put that component in a separate pane that shows its
list when a row is selected, but I would prefer to have the multiple
entries list right in a cell in the row if possible. Without subclassing
NSTable (perhaps via the table's display delegate), might it be
practical to set the cell class (for the specific column) to NSMatrix (
or perhaps a subclass thereof)?

In article <20081116141639420-0800.RemoveThis@news.mw.centurytel.net>,
Luddite Wacko <sydde.RemoveThis@wafirst.net> wrote:

> I want to create a list of items using NSTable, but there is one
> component of the list that could have multiple entries. One way to do
> this would be to put that component in a separate pane that shows its
> list when a row is selected, but I would prefer to have the multiple
> entries list right in a cell in the row if possible. Without subclassing
> NSTable (perhaps via the table's display delegate), might it be
> practical to set the cell class (for the specific column) to NSMatrix (
> or perhaps a subclass thereof)?

NSOutlineView, a subclass of NSTableView, was invented to do this job.