According to the black diagram, it appears that to make use of the telephone I should pull a 10 cent coin out of a slot, take the receiver off a clothes hook, have the receiver spray me with strips of bacon, rest my hand on top of the wheel as it spins around, a little man vomits onto the phone, I ring the doorbell, breath into a tube, and
viola, the phone is back where it started.
In red it seems that if I ask a question the phone lays an egg.
(Diagram from Otto Neurath's
International Picture Language, 1936.)