About HierarchicalDock Gives you hierarchical menu navigation of folders sitting in your Dock. As of Mac OS X 10.5.1, Leopard doesn’t support going through more than 1 folder deep for stacks in your Dock. This makes it easier to navigate multiple folders deep with a simple click-and-hold.

	Read more at Apple Downloads
	www.apple.com/downloads/macosx/system_disk_utilities/hierarchicaldock.html