Whether to automatically use color tables smaller than colorTableBits when possible.
Whether to use a new color table for every image instead of using a single global color table.
Number of times the animation should loop, from 0 (infinite) up to 65535. Infinity is treated as 0 and NaN is treated as 1. If left undefined, no Netscape 2.0 block will be added to the GIF and looping will be unspecified.
Size of the temporary buffer used during encoding the GIF file. Only affects encoding performance.
The value of /gif/ColorTable!ColorTable.sizefield will be one less than this.