Uncompressed RAW photograph taken with a Pentax digital camera; stores image information exactly how it was captured by the camera's sensor, with no compression or color adjustment. NOTE: Different Pentax camera models may store images using slightly different variations of the format; therefore certain software programs may read some, but not all PEF files.
File created in the Portable Embosser Format (PEF), an XML format used to store braille books in digital form; includes unambiguous embossing specifications; enables braille books to be stored and shared in an unambiguous exchange format. PEF was developed to handle some cases of ambiguity from other braille formats, such as ASCII braille. PEF files can be opened and created using Braille Utils, a Java library for PEF manipulation. PEF files can also be generated from .ODT documents using odt2braille, a plugin for OpenOffice.org 3.0 or later.