printf("-a <value> \t slope of nuclear energy loss (default %f)\n",A_EL);
printf("-b <value> \t nuclear energy loss offset (default %f)\n",B_EL);
printf("-x <value> \t # x cells (default %d)\n",X);
printf("-a <value> \t slope of nuclear energy loss (default %f)\n",A_EL);
printf("-b <value> \t nuclear energy loss offset (default %f)\n",B_EL);
printf("-x <value> \t # x cells (default %d)\n",X);
printf("-D <value> \t diffusion rate from cryst to amorph cells (default %f)\n",DR_AC);
printf("-c <value> \t diffusion rate in cryst cells (default %f)\n",DR_CC);
printf("-e <value> \t do diffusion every <value> steps (default %d)\n",DIFF_RATE);
printf("-D <value> \t diffusion rate from cryst to amorph cells (default %f)\n",DR_AC);
printf("-c <value> \t diffusion rate in cryst cells (default %f)\n",DR_CC);
printf("-e <value> \t do diffusion every <value> steps (default %d)\n",DIFF_RATE);
printf("-W <value> \t write every <value> steps to save file (default %d)\n",RESAVE);
puts("-C <file> \t convert file to gnuplot format");
puts("-L <file> \t load from file");
puts("-S <file> \t save to file");
puts("-R <file> \t read from random file");
printf("-W <value> \t write every <value> steps to save file (default %d)\n",RESAVE);
puts("-C <file> \t convert file to gnuplot format");
puts("-L <file> \t load from file");
puts("-S <file> \t save to file");
puts("-R <file> \t read from random file");