Specify the parameters for the packing algorithm Iteration count (5…100) – the number of iterations used by the packing algorithm. The greater the number, the better (packing is tighter), but the more time is spent on calculations. Border Size Factor (0…0.3) – the factor that affects the field size of parts. The smaller it is, the smaller the field. Item Distance Factor (0…0.3) – the factor that affects the distance between packed objects. The smaller it is, the smaller the distance. Show Preview Rectangles – if this option is on, then an outline rectangle is drawn around the packed objects. Show Preview Rectangles – Show the boundary rectangles around parts.