This is a 7-bit font format used for directly downloading to a PostScript printer. It has two character encoding in hexadecimal. It has good compatibility with multiple font formats. PFA contains an outline for font symbols and is formatted in ASCII text data.
This is an image file format written in textual form in the C language. It is used in the X Windows System interface for remote connections, which is designed to serve clients and servers. This format can be used to store color and monochrome images.