This page defines a prefix.
Prefixes are used by this wiki to quickly alert the reader to the source of a statement. The most common of these is TV, which indicates the source is a televised story.
AUDIO is used in this wiki as a prefix to denote any valid work of fiction that was originally released in the audio medium. Thus, all audio plays by Big Finish Productions, AudioGo, BBV Productions, and the like, all use this prefix.