I have an application where the client can select items from a tree-like structure using checkboxes. Items with only some sub-items selected show only a "grayed" check mark which transports the "not entirely selected"-information quite clearly and works quite nicely.
Later on a report is generated which contains the selected items of the tree structure only (with the unselected ones omitted). Therefore it is difficult to spot which items are only partially selected on the report (changing the selection at that point is not allowed any more so no checkboxes are shown).
What would be a good visual reminder that a listed item is only partly selected?