What is the purpose of "Disable raster quantization" setting?

EDOCBUILDER > eDocBuilder FAQs
 If you check the box marked "Disable raster quantization" for the template, this will prevent images from being quantized.  Select this if your image gradients display banded instead of smooth. This flag is off by default. This option is found at the bottom right column in the Template Info tab. This option is only for Interactive Designer templates.