Encoder assistance needed

[phillutz]

Here are a few lines from Kevins encoder readme.txt

Five things must be done before this software will work
correctly on the FRC-RC:

1) The left encoder's phase-A output is wired to digital input
one and the phase-B output is wired to digital input six.

2) The right encoder's phase-A output is wired to digital input
two and the phase-B output is wired to digital input eight.
...

In other threads it says to wire the hall effect sensor (4 pins) to pwm (3 pins) with pins 3&4 together.

This nets one sensor and only one pwm connection.
1. Is this Phase A or Phase B?
2. Where do I find the other?
3. Or how is this physically wired.

Thanks,

Phil