That line about "pro settings" just refers to more complex policies for OC levels, like algo specific with gpu offset. They are quite complex to understand at a first glance but will be clear what they do once someone realize he needs such useful policies.
That type of OC is just what I want as I have 2 hosts with GPUs that are the same model (e.g., 1080 Ti) but from different vendors so they require different power and clocks. Ideally, I would like to be able to OC per model/vendor and again for algo. Currently, I do this with different 1bash files named 1bash_$coin. I suppose that is the least painful way to do it. My point was that I see this one mention of it in 1bash but no support for it in 3main. Which branch has it?