Standards EPP
You have found the way to EPP on Standards:
Free Online Dictionary of Computing - Explains what EPP is with hyperlinks to additional information.
Ian Harries Documents and Information - Interfacing to the IBM-PC Parallel Printer Port.
Parallel Port Background - As technology progressed and the need for greater external connectivity increased, the parallel port became the means by which you could connect higher performance peripherals.
Parallel Port Central - A collection of files and links to material about the PCs parallel port, including ECP, EPP, bidirectional, and IEEE-1284 modes (and other I/O ports as well). From Jan Axelson. Help build the largest human-edited directory on the web.