Difference between "Mirror Analog" and "Rig Outputs"

[dmitch]

The Digital outputs can be configured to produce, among other options, "Mirror Analog" and "Rig Outputs". Question: What exactly is the difference between these two options? A block diagram of the unit would really help here...(does anyone know where I can find such a diagram? I don't mean a screen shot of the front panel as is seen in the "What's in a Rig?" section of the User Guide...)

As far as I can tell the only difference between the Analog Output and the Rig Outputs is the level, as controlled by the non-rig-specific "Volume" control on the upper left of the front panel. Are there any other differences?

Thanks.