Sometimes you want to make a document available to your end users using an <Alt-G> call. Those who asked for this feature have dozens of 'fill-in' clauses with similar but slightly varying, names. They don't want those documents displayed in a DropDown List (too many; cryptic names)
The solution we came up with was to place those clauses in a subfolder called "Hidden" beneath any folder associated with a DropDown List. When Pathagoras searches for a clause in a DropDown List, it will (of course) automatically look in the parent folder, and if not there found, is programmed to look for (and if found, look within) a sub-folder called 'Hidden".