They were novelty cards, matte thick Taiwanese-printed paper with square indentations die-cut at the four corners, in emulation of pixelated cards. These were re-animated cards originally designed by Susan Kare, for Windows 3.0 (after she had already iconicized the smiling face onto the Mac). Limited in the depth of dots and pixels she could work with, curves were made into black blocks of staircases. If you looked closer at this printed version, zooming the card up to your eye, the die-cut edges for what had been hard right angles were again slightly beveled, a smaller curve where the Kare design had instead been three black pixels. A physical manifestation of a digital representation of a physical object, curves and novel lines recursively echoing one another.