a heading over a group of tiles is a folder: it puts one level (the values of a face) and the level inside it (the to-dos holding each value) on one screen at two distances. the values are pieces of their own. they already were tiles on the face seen from afar (states › in progress, to do, idea…), so on my to-dos they turned up a second time, as words. turning the cube moved the to-dos between headings, which made the face the turn landed on the master grouping for that moment: the look was used to sort, not to look. each group also became a small square of its own, so the screen was a list of squares, never one square.