Prototype 18 — the program chart. The missing analog component: a faceplate program chart (washing-machine style) printed between the scenes and their switches — filled dot = the program closes it, ring = opens it, dash = leaves it alone, letter = power; the active program's row lights. Airplane is gone (the network panel owns its master switch). OFF on the dial now reads CUSTOM. Slides and timer re-scaled toward their real-life sizes.