Hi, what's the technical name for electronic processing boards (the purple circuits)? Need it to show icons in train station names. It's not "electronic-processing-board" as one would expect. I already figured out that the lower tiers of circuits have the same technical names as the 3 tiers of vanilla circuits. (For instance, the red circuits are "advanced-circuit".)

processing-unit and then processing-unit-2

Thank you for the response Bob! But that doesn't seem to be correct either. I have even literally copy-pasted that string "processing-unit-2" and it wasn't recognized. I also tried variants "procesing-unit-2", "processing-unit-2", "processing-unit2", "processing-unit-mk2", and so on. None of them work.

Yeah, I looked at the code, I got it wrong.
but yeah
processing-unit
advanced-processing-unit.

Thanks Bob, it works now! Also thanks for this awesome mod, as well as your other mods. Makes the game even more interesting/addictive, if that is at all possible.