Document Revision History

This table describes the changes to NSOutlineViewDataSource Protocol Reference.

Date	Notes
2009-04-27	Updated for Mac OS X v10.6. The NSOutlineViewDataSource informal protocol is now a formal protocol.
2007-02-19	Corrected minor typographical errors.
2006-05-23	Clarified that outlineView:objectValueForTableColumn:item: must return the same object for a requested item to maintain the collapsed state between reloads.
	First publication of this content as a separate document.

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