Use turbo mode (Shift-Click green flag) then click green flag, and watch!
Using bitwise xor operation in scratch (!), using arithmetic operations, to reproduce "munching squares" effect + added glitch effect. :) Without glitch, it would look something like... whatever, check yourself: pen shade= x XOR y (No, I didn't invented this effect :P) http://mathworld.wolfram.com/MunchingSquares.html http://en.wikipedia.org/wiki/Bitwise_operation#Mathematical_equivalents
