A diagram has been sketched out on the bedsheet. Blue-black fountain-pen marks, punctuated with spreading blotches where the hand hesitated, reinforce an earlier stratum of graphite scratches. Someone terribly important (probably the last person to sleep on this bedsheet) has come in with a black grease pencil and reshaped the whole thing in his own image with fat thrusting strokes and hasty notations that look like unraveled braids in a woman’s long hair. This work has been annotated politely by a fastidious engineer, probably Captain Noda himself, working with ink and a fine brush.