That is where my understanding falls embarrassingly short. I imagine it is some method of magic, relying upon aetheric means of transference or somesuch. Something which we cannot see, at any rate. Though, if you simply mean how it appears when in use, I could demonstrate.

[As he turns his attention back to Zelgadis, he does notice the sad display of the hedgehog. As he speaks, he nods towards the pathetic blue spikeball.]

Oh, it seems your attention is desired.