Full Duplex: link Target Process entity mentions in GitHub back to Target Process

> [A *full-duplex* (FDX) system, or sometimes called double-duplex, allows communication in both directions, and, unlike half-duplex, allows this to happen simultaneously. Land-line telephone networks are full-duplex, since they allow both callers to speak and be heard at the same time, with the transition from four to two wires being achieved by a hybrid coil in a telephone hybrid.](http://en.wikipedia.org/wiki/Full_duplex#Full-duplex)

Implements #1 .