a drop-down in the corner is chrome: a way of getting around that is not a piece, works on every page in the same way, and does not care where you are. what it held is real: cube design has a time, and each version is cube design as it was on a day. that is a kind of cube design, not a setting of the page. it was also two doors to one thing: the picker and "how it grew" both opened the versions, in two shapes. and on a piece close up, it jumped to the same piece in another version: a sideways move between two cubes, which is neither zoom in nor zoom out.