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 a format for editing, storing, and transmitting images with metadata for scientific purposes. The main application is astronomy. The main emphasis is on the metadata, which contain information about spatial and photometric calibrations. FTS is often used for storing data without including the actual associated images. It supports the storage of databases, matrices, etc.