object = accOutline(wndID);
Will search for a child accessible object having the ROLE_SYSTEM_OUTLINE role.
Represents a tree control (or an outline structure). The default action (accDoDefaultAction) of a tree item is to expand or collapse, depending on its current state. The value (accValue) of an item is the item's level in the tree: root items have a value of 0, their direct children have a value of 1 and so on.
wnd Overview | MS Accessibility