Press push button at the left hand of the number display to select circuit to drive.
The number of selected circuit is displayed.
Of course, the number of driven circuits could be bigger, but it should need more space on the layer.
Comments for developers and hurz :
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After recreating this circuit, it seems to run properly. That was not the situation for the first edition. I don't know why...
I must say that this circuit is probably not quite the same as the first one because I redrawed it from memory, but it is still not so different in principle.
