Only two effects are implemented yet:
Feedback & Fire

these keys switch between the effects:
  R1 & R2

try these keys in the different effects:
feedback:
  Rleft & Rdown for scaling
  Rup & Rright for rotation

fire:
  Rleft & Rdown for changing palettes

for any comments and source-code (not very well documented, but very stylish)
feel free to mail: raasch@fh-worms.de

have fun, Michael