What are the wiring terminal designations for the Honeywell 5000 thermostat?

The main terminals are: Rc (24VAC power from cooling transformer), R (24VAC power from heating transformer), W (Heat relay stage 1), W2 (Heat relay stage 2), Y (Compressor contactor stage 1), Y2 (Compressor contactor stage 2), G (Fan relay), C (24VAC common), O/B (Changeover valve), Aux/E (Auxiliary/Emergency heat relay), and L (Emergency Heat output).