Notes on the Documentation Development Process
http://www.geoff-hart.com/resources/1995-1998/notes.htm

Hart, Geoffrey J.S.
Geoff-Hart.com
1996

Abstract:

Define your audience, and their needs, explicitly and carefully. The definition process may lead you to include additional material such as indexes, system requirements, and contextual notes (e.g., lists of exceptions), as well as the preplanned documentation.