Wilder's Original RSI Explanation?

["Wayne" <wayner@xxxxxxxxx>]

Hi There:
 
I am trying to study J. Wells Wilder's 
original RSI formula, past the basic
description and formula given in the Metastock 
manual.
 
The manual only says, "The RSI is a fairly 
simple formula, but is difficult
to explain without pages of examples."
 

Does anybody have a more detailed study, 
perhaps Wilder's own explanation,
regarding this? I can't seem to find much past the 
basics on the internet.
 
Many thanks,
 
Wayne
Victoria, BC
Canada