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display hack: n. A program with the same approximate purpose as a kaleidoscope: to
make pretty pictures. Famous display hacks include
munching squares, smoking clover, the BSD Unix
rain(6)
program,
worms(6)
on miscellaneous Unixes, and the X
kaleid(1)
program. Display hacks can also be implemented by creating text files
containing numerous escape sequences for interpretation by a video
terminal; one notable example displayed, on any VT100, a Christmas tree
with twinkling lights and a toy train circling its base. The
hack value of a display hack is proportional to the
esthetic value of the images times the cleverness of the algorithm divided
by the size of the code.
Syn. psychedelicware.
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