Phase A and Phase B on encoders

[kiettyyyy]

Hey all!

I've been looking through Kevin Watson's encoder code on his website (http://www.kevin.org/frc/). I'm trying to learn about how to make these things work, but I do know that there are two connections to the encoders. A phase A and phase B. I only saw references to phase B inside the code like pinouts to the digital inputs on 11 to ???. Where would the phase A connectors go? And why arn't they in the code? Maybe its in some file that I wouldnt know??

Thanks!