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Integrated Parallel Port Mode
Parallel ports have several different modes of operation. The original parallel ports were used only for one-way communication from the PC to the printer; newer ones include bi-directional communication and other abilities. The normal choices for this setting are:
Generally speaking, you will usually want to use EPP or ECP. ECP has enhanced performance but greater compatibility problems, overall. I usually use EPP.
Note: This setting is
either locked out or ignored if the parallel port is disabled.