Probably another dumb question, but here goes.
I'm using the excellent WebBotLib Project Designer for a project, which uses some LED's on my AxonII.
The designer assigns 2 pins to an led, A0 signal and A0 live+.
I'm confused, as I expected a connection to the ground pin as well.
Does this mean when I use software to activate the led, the signal pin becomes a ground pin, and the circuit is completed?