#N canvas;
#X msg 255 178 gemList;
#X msg 164 146 gemList;
#X msg 164 302 gemList;
#X text 179 20 part of GEM;
#X text 88 146 source pix;
#X text 323 178 second pix;
#X obj 164 217 pix_subtract;
#X text 177 43 pix_subtract;
#X text 152 74 subtract two pixes;
#X text 65 341 pix_subtract simply subtracts two pixes from each other. It clamps the resultant image so that no pixel values go below zero (In other words \, it is easy to get a black out).;
#X connect 0 0 6 1;
#X connect 1 0 6 0;
#X connect 6 0 2 0;
