How to offset signals? The Doepfer A 183 - 2 Offset / Attenuator / Polarizer

This video is the third part of the Doepfer series, in which introducing the A 183 - 2 Offset-generator, Attenuator, Polarizer module.
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[@x.noybic7007]

Thanks it helps me to visualize it on the scope, now I understand.