Brian Cryer's Web Resources


1. Universal Disc Format. A disc format for optical media (such as cds and dvds) which is designed to be supportable by any operating system and not be tied to a single operating system.

UDF is defined by ISO/IEC 13346 (also known as ECMA-167) and is widely viewed as a successor to ISO 9660 (which defined the file system for CD-ROMs).

For more information see:

  • www.osta.org - Home page of OSTA (Optical Storage Technology Association), who are responsible for developing and maintaining the UDF standard.
  • www.osta.org/specs - Location of the specification for UDF.
2. User Defined Function. Typically used to describe the ability for users to create their own functions for use in Microsoft Excel.