Verbose mode (show progress). Enables printout of running scan lines.

Set number of intensity levels per color. This number must be power of two up to 32, as Gif format can only have 256 color simultaneously and 7 basic colors are to be displayed.

Force image size to be SizeX by SizeY pixels. Image size will be rounded down to be a multiple of number of intensities horizontally, and 7 (colors) vertically.

Print one line command line help, similar to Usage above.