This is a format for presenting fonts in PDF files that was initially conceived to store symbols in the Japanese and Chinese languages because it had a 16-bit structure and allowed for more precise adjustment. CID expands the the potential for PostScript by supporting languages that do not have a left-to-right orientation, and by supporting even a vertical mode of orientation.
This is an image format that can be transmitted over analog broadcasting channels. It has a 16-bit structure, and it is transmitted using a three-component YUV color model. One component is responsible for brightness, and the remaining two account for differences in color.