AFB Carburetor Question

I have done some research. I do not know the details of how it is done; but here is what I learned. All adjustment screws are “clockwise-lean”. The two idle screws adjust the flow of a predetermined air/fuel mixture to the emulsification process (which adds more air) which determines overall air/fuel mixture. Clockwise turn reduces flow of this air/fuel mixture thus leaning out overall air/fuel mixture. The air bleed screw actually adjusts the predetermined mixture by bleeding off air into the mixture. It has reverse threads so a clockwise turn opens the passage allowing more air into that predetermined mixture thus going leaner.