Including letter 'c' in a window listing specification lists the given window and all of its children, including children of children.
The specified window serves as the starting window and is shown with vertical level 0 and horizontal position 0. Then first level children have vertical position 1, and so on, with increasing horizontal positions per level as the enumeration proceeds through the z-order.
You can include recursion to obtain an MSAA listing for each window. However, because the MSAA hierarchy starting at a given window may well include objects of child windows, such a recursive listing usually includes a lot of repeated information. To avoid generating a large amount of largely superfluous data, it is better to obtain MSAA information on a per-window basis.
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