smoking clover

[ITS] A display hack originally due to Bill Gosper. Many

convergent lines are drawn on a colour monitor in AOS mode

(so that every pixel struck has its colour incremented). The

lines all have one endpoint in the middle of the screen; the

other endpoints are spaced one pixel apart around the

perimeter of a large square. The colour map is then

repeatedly rotated. This results in a striking, rainbow-hued,

shimmering four-leaf clover. Gosper joked about keeping it

hidden from the FDA (the US's Food and Drug Administration)

lest its hallucinogenic properties cause it to be banned.